Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. If the rig is truly dead, do you have the filters in the correct slots?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. If the rig is truly dead, do you have the filters in the correct slots?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Confusion is clearing a bit, check my thinking on this.................. The 400hz filters are listening over a portion of the band away from the section where the mark and space tones will be heard. So the reason it sounds so beautifully quiet is because I'm listening to the null outside the filters bandpass. Yes?

The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get the RTTY signal inside the passband. The 450 also has a menu option to change the receiver tone from 2125 to 1275hz. This may be irrelevant though as it is for FSK mode.



I'll be back in the op chair this afternoon and give these options a try then get back to the email thread. PLAN-B if this fails, is there a simple & inexpensive interface that I can use to do true FSK. USB to 13pin DIN...........??



David






> Date: Sat, 25 Sep 2010 23:00:31 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Okay, so you think if I adjust my IF shift it will help?
>
> If the IF shift has enough range it will work. Find a "dead"
> place on the band, select the narrow filers and turn the IF
> shift one way or the other to the stops and see if you hear
> noise come up.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/25/2010 10:39 PM, David VE3VID wrote:
> >
> > Okay, so you think if I adjust my IF shift it will help?
> >
> >
> >
> > When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
> >
> >
> >
> >
> >
> >
> >
> >
> >> From:
> >> To: ;
> >> Subject: Re: [RTTY] INRAD filter question
> >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> >>
> >> you can probably use the BPF and IF shift to center LSB into the filters
> >> passband. Then you will have to use 2125/2295 for tones.
> >>
> >> 73
> >> Jim w7RY
> >>
> >>
> >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. If the rig is truly dead, do you have the filters in the correct slots?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Confusion is clearing a bit, check my thinking on this.................. The 400hz filters are listening over a portion of the band away from the section where the mark and space tones will be heard. So the reason it sounds so beautifully quiet is because I'm listening to the null outside the filters bandpass. Yes?

The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get the RTTY signal inside the passband. The 450 also has a menu option to change the receiver tone from 2125 to 1275hz. This may be irrelevant though as it is for FSK mode.



I'll be back in the op chair this afternoon and give these options a try then get back to the email thread. PLAN-B if this fails, is there a simple & inexpensive interface that I can use to do true FSK. USB to 13pin DIN...........??



David






> Date: Sat, 25 Sep 2010 23:00:31 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Okay, so you think if I adjust my IF shift it will help?
>
> If the IF shift has enough range it will work. Find a "dead"
> place on the band, select the narrow filers and turn the IF
> shift one way or the other to the stops and see if you hear
> noise come up.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/25/2010 10:39 PM, David VE3VID wrote:
> >
> > Okay, so you think if I adjust my IF shift it will help?
> >
> >
> >
> > When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
> >
> >
> >
> >
> >
> >
> >
> >
> >> From:
> >> To: ;
> >> Subject: Re: [RTTY] INRAD filter question
> >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> >>
> >> you can probably use the BPF and IF shift to center LSB into the filters
> >> passband. Then you will have to use 2125/2295 for tones.
> >>
> >> 73
> >> Jim w7RY
> >>
> >>
> >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Daivd,

Check this post on my blog. It should be helpful for a circuit to generate
FSK via USB.

73 de Al, KE1FO

K3 #3055
K3 #4094
-----
Check out my Amateur Radio Contesting blog at ke1fo.wordpress.com.


On Sun, Sep 26, 2010 at 11:11 AM, David VE3VID <> wrote:

>
> Confusion is clearing a bit, check my thinking on this..................
> The 400hz filters are listening over a portion of the band away from the
> section where the mark and space tones will be heard. So the reason it
> sounds so beautifully quiet is because I'm listening to the null outside the
> filters bandpass. Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get
> the RTTY signal inside the passband. The 450 also has a menu option to
> change the receiver tone from 2125 to 1275hz. This may be irrelevant though
> as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a try
> then get back to the email thread. PLAN-B if this fails, is there a
> simple & inexpensive interface that I can use to do true FSK. USB to 13pin
> DIN...........??
>
>
>
> David
>
>
>
>
>
>
> > Date: Sat, 25 Sep 2010 23:00:31 -0400
> > From:
> > To:
> > Subject: Re: [RTTY] INRAD filter question
> >
> >
> > > Okay, so you think if I adjust my IF shift it will help?
> >
> > If the IF shift has enough range it will work. Find a "dead"
> > place on the band, select the narrow filers and turn the IF
> > shift one way or the other to the stops and see if you hear
> > noise come up.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> > On 9/25/2010 10:39 PM, David VE3VID wrote:
> > >
> > > Okay, so you think if I adjust my IF shift it will help?
> > >
> > >
> > >
> > > When I click either filter in its like a dead band as I tune along.
> Like a 60db attenuator is on.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >> From:
> > >> To: ;
> > >> Subject: Re: [RTTY] INRAD filter question
> > >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> > >>
> > >> you can probably use the BPF and IF shift to center LSB into the
> filters
> > >> passband. Then you will have to use 2125/2295 for tones.
> > >>
> > >> 73
> > >> Jim w7RY
> > >>
> > >>
> > >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. If the rig is truly dead, do you have the filters in the correct slots?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Confusion is clearing a bit, check my thinking on this.................. The 400hz filters are listening over a portion of the band away from the section where the mark and space tones will be heard. So the reason it sounds so beautifully quiet is because I'm listening to the null outside the filters bandpass. Yes?

The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get the RTTY signal inside the passband. The 450 also has a menu option to change the receiver tone from 2125 to 1275hz. This may be irrelevant though as it is for FSK mode.



I'll be back in the op chair this afternoon and give these options a try then get back to the email thread. PLAN-B if this fails, is there a simple & inexpensive interface that I can use to do true FSK. USB to 13pin DIN...........??



David






> Date: Sat, 25 Sep 2010 23:00:31 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Okay, so you think if I adjust my IF shift it will help?
>
> If the IF shift has enough range it will work. Find a "dead"
> place on the band, select the narrow filers and turn the IF
> shift one way or the other to the stops and see if you hear
> noise come up.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/25/2010 10:39 PM, David VE3VID wrote:
> >
> > Okay, so you think if I adjust my IF shift it will help?
> >
> >
> >
> > When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
> >
> >
> >
> >
> >
> >
> >
> >
> >> From:
> >> To: ;
> >> Subject: Re: [RTTY] INRAD filter question
> >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> >>
> >> you can probably use the BPF and IF shift to center LSB into the filters
> >> passband. Then you will have to use 2125/2295 for tones.
> >>
> >> 73
> >> Jim w7RY
> >>
> >>
> >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Daivd,

Check this post on my blog. It should be helpful for a circuit to generate
FSK via USB.

73 de Al, KE1FO

K3 #3055
K3 #4094
-----
Check out my Amateur Radio Contesting blog at ke1fo.wordpress.com.


On Sun, Sep 26, 2010 at 11:11 AM, David VE3VID <> wrote:

>
> Confusion is clearing a bit, check my thinking on this..................
> The 400hz filters are listening over a portion of the band away from the
> section where the mark and space tones will be heard. So the reason it
> sounds so beautifully quiet is because I'm listening to the null outside the
> filters bandpass. Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get
> the RTTY signal inside the passband. The 450 also has a menu option to
> change the receiver tone from 2125 to 1275hz. This may be irrelevant though
> as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a try
> then get back to the email thread. PLAN-B if this fails, is there a
> simple & inexpensive interface that I can use to do true FSK. USB to 13pin
> DIN...........??
>
>
>
> David
>
>
>
>
>
>
> > Date: Sat, 25 Sep 2010 23:00:31 -0400
> > From:
> > To:
> > Subject: Re: [RTTY] INRAD filter question
> >
> >
> > > Okay, so you think if I adjust my IF shift it will help?
> >
> > If the IF shift has enough range it will work. Find a "dead"
> > place on the band, select the narrow filers and turn the IF
> > shift one way or the other to the stops and see if you hear
> > noise come up.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> > On 9/25/2010 10:39 PM, David VE3VID wrote:
> > >
> > > Okay, so you think if I adjust my IF shift it will help?
> > >
> > >
> > >
> > > When I click either filter in its like a dead band as I tune along.
> Like a 60db attenuator is on.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >> From:
> > >> To: ;
> > >> Subject: Re: [RTTY] INRAD filter question
> > >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> > >>
> > >> you can probably use the BPF and IF shift to center LSB into the
> filters
> > >> passband. Then you will have to use 2125/2295 for tones.
> > >>
> > >> 73
> > >> Jim w7RY
> > >>
> > >>
> > >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.

If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
should get you to 2800 Hz which should be more than enough. Check
it though.

> PLAN-B if this fails, is there a simple& inexpensive interface
> that I can use to do true FSK. USB to 13pin DIN...........??

See the information on AA5AU's web page:
http://www.aa5au.com/rtty.html.
You will need a pair of NPN transistors driven from the RTS/DTR
lines of a typical USB to serial converter with EXTFSK to generate
the FSK/PTT signal. You can continue to use the Signalink USB for
PSK31/other digital modes and for receiving RTTY.

73,

... Joe, W4TV

On 9/26/2010 11:11 AM, David VE3VID wrote:
>
> Confusion is clearing a bit, check my thinking on
> this.................. The 400hz filters are listening over a
> portion of the band away from the section where the mark and space
> tones will be heard. So the reason it sounds so beautifully quiet is
> because I'm listening to the null outside the filters bandpass.
> Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a
> try then get back to the email thread. PLAN-B if this fails, is
> there a simple& inexpensive interface that I can use to do true FSK.
> USB to 13pin DIN...........??
>
>
>
> David
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. If the rig is truly dead, do you have the filters in the correct slots?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Confusion is clearing a bit, check my thinking on this.................. The 400hz filters are listening over a portion of the band away from the section where the mark and space tones will be heard. So the reason it sounds so beautifully quiet is because I'm listening to the null outside the filters bandpass. Yes?

The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get the RTTY signal inside the passband. The 450 also has a menu option to change the receiver tone from 2125 to 1275hz. This may be irrelevant though as it is for FSK mode.



I'll be back in the op chair this afternoon and give these options a try then get back to the email thread. PLAN-B if this fails, is there a simple & inexpensive interface that I can use to do true FSK. USB to 13pin DIN...........??



David






> Date: Sat, 25 Sep 2010 23:00:31 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Okay, so you think if I adjust my IF shift it will help?
>
> If the IF shift has enough range it will work. Find a "dead"
> place on the band, select the narrow filers and turn the IF
> shift one way or the other to the stops and see if you hear
> noise come up.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/25/2010 10:39 PM, David VE3VID wrote:
> >
> > Okay, so you think if I adjust my IF shift it will help?
> >
> >
> >
> > When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
> >
> >
> >
> >
> >
> >
> >
> >
> >> From:
> >> To: ;
> >> Subject: Re: [RTTY] INRAD filter question
> >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> >>
> >> you can probably use the BPF and IF shift to center LSB into the filters
> >> passband. Then you will have to use 2125/2295 for tones.
> >>
> >> 73
> >> Jim w7RY
> >>
> >>
> >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Daivd,

Check this post on my blog. It should be helpful for a circuit to generate
FSK via USB.

73 de Al, KE1FO

K3 #3055
K3 #4094
-----
Check out my Amateur Radio Contesting blog at ke1fo.wordpress.com.


On Sun, Sep 26, 2010 at 11:11 AM, David VE3VID <> wrote:

>
> Confusion is clearing a bit, check my thinking on this..................
> The 400hz filters are listening over a portion of the band away from the
> section where the mark and space tones will be heard. So the reason it
> sounds so beautifully quiet is because I'm listening to the null outside the
> filters bandpass. Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get
> the RTTY signal inside the passband. The 450 also has a menu option to
> change the receiver tone from 2125 to 1275hz. This may be irrelevant though
> as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a try
> then get back to the email thread. PLAN-B if this fails, is there a
> simple & inexpensive interface that I can use to do true FSK. USB to 13pin
> DIN...........??
>
>
>
> David
>
>
>
>
>
>
> > Date: Sat, 25 Sep 2010 23:00:31 -0400
> > From:
> > To:
> > Subject: Re: [RTTY] INRAD filter question
> >
> >
> > > Okay, so you think if I adjust my IF shift it will help?
> >
> > If the IF shift has enough range it will work. Find a "dead"
> > place on the band, select the narrow filers and turn the IF
> > shift one way or the other to the stops and see if you hear
> > noise come up.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> > On 9/25/2010 10:39 PM, David VE3VID wrote:
> > >
> > > Okay, so you think if I adjust my IF shift it will help?
> > >
> > >
> > >
> > > When I click either filter in its like a dead band as I tune along.
> Like a 60db attenuator is on.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >> From:
> > >> To: ;
> > >> Subject: Re: [RTTY] INRAD filter question
> > >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> > >>
> > >> you can probably use the BPF and IF shift to center LSB into the
> filters
> > >> passband. Then you will have to use 2125/2295 for tones.
> > >>
> > >> 73
> > >> Jim w7RY
> > >>
> > >>
> > >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.

If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
should get you to 2800 Hz which should be more than enough. Check
it though.

> PLAN-B if this fails, is there a simple& inexpensive interface
> that I can use to do true FSK. USB to 13pin DIN...........??

See the information on AA5AU's web page:
http://www.aa5au.com/rtty.html.
You will need a pair of NPN transistors driven from the RTS/DTR
lines of a typical USB to serial converter with EXTFSK to generate
the FSK/PTT signal. You can continue to use the Signalink USB for
PSK31/other digital modes and for receiving RTTY.

73,

... Joe, W4TV

On 9/26/2010 11:11 AM, David VE3VID wrote:
>
> Confusion is clearing a bit, check my thinking on
> this.................. The 400hz filters are listening over a
> portion of the band away from the section where the mark and space
> tones will be heard. So the reason it sounds so beautifully quiet is
> because I'm listening to the null outside the filters bandpass.
> Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a
> try then get back to the email thread. PLAN-B if this fails, is
> there a simple& inexpensive interface that I can use to do true FSK.
> USB to 13pin DIN...........??
>
>
>
> David
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. So its all good news. Adjusting the IF shift brought the RTTY signal into the passband of the 400hz filter using AFSK in LSB. Notwithstanding the technical reasons this worked, it was a beautiful thing to see for someone who had been doing casual RTTY for a year using SSB width filters. Conditions on 15 & 20m were pretty nice this afternoon and trolling through the RTTY band segment working one station after another...........sweet. I'm ecstatic. The 450 is now the dedicated digital rig.



I do think that getting my setup to transmit FSK would have some benefit........but Joe, I'm the guy you want sewing your face back on when you flip your sled over somewhere north of 60. If you have to wait for me to find a pair of NPN transistors first, well, it might not go so well.............hihihi :) Seriously...............do you know of a commercial product. Dont forget, it took me 7+ months to get the INRAD filters working :)

David






> Date: Sun, 26 Sep 2010 18:07:33 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> > get the RTTY signal inside the passband. The 450 also has a menu
> > option to change the receiver tone from 2125 to 1275hz. This may be
> > irrelevant though as it is for FSK mode.
>
> If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
> should get you to 2800 Hz which should be more than enough. Check
> it though.
>
> > PLAN-B if this fails, is there a simple& inexpensive interface
> > that I can use to do true FSK. USB to 13pin DIN...........??
>
> See the information on AA5AU's web page:
> http://www.aa5au.com/rtty.html.
> You will need a pair of NPN transistors driven from the RTS/DTR
> lines of a typical USB to serial converter with EXTFSK to generate
> the FSK/PTT signal. You can continue to use the Signalink USB for
> PSK31/other digital modes and for receiving RTTY.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/26/2010 11:11 AM, David VE3VID wrote:
> >
> > Confusion is clearing a bit, check my thinking on
> > this.................. The 400hz filters are listening over a
> > portion of the band away from the section where the mark and space
> > tones will be heard. So the reason it sounds so beautifully quiet is
> > because I'm listening to the null outside the filters bandpass.
> > Yes?
> >
> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> > get the RTTY signal inside the passband. The 450 also has a menu
> > option to change the receiver tone from 2125 to 1275hz. This may be
> > irrelevant though as it is for FSK mode.
> >
> >
> >
> > I'll be back in the op chair this afternoon and give these options a
> > try then get back to the email thread. PLAN-B if this fails, is
> > there a simple& inexpensive interface that I can use to do true FSK.
> > USB to 13pin DIN...........??
> >
> >
> >
> > David
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. If the rig is truly dead, do you have the filters in the correct slots?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Confusion is clearing a bit, check my thinking on this.................. The 400hz filters are listening over a portion of the band away from the section where the mark and space tones will be heard. So the reason it sounds so beautifully quiet is because I'm listening to the null outside the filters bandpass. Yes?

The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get the RTTY signal inside the passband. The 450 also has a menu option to change the receiver tone from 2125 to 1275hz. This may be irrelevant though as it is for FSK mode.



I'll be back in the op chair this afternoon and give these options a try then get back to the email thread. PLAN-B if this fails, is there a simple & inexpensive interface that I can use to do true FSK. USB to 13pin DIN...........??



David






> Date: Sat, 25 Sep 2010 23:00:31 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Okay, so you think if I adjust my IF shift it will help?
>
> If the IF shift has enough range it will work. Find a "dead"
> place on the band, select the narrow filers and turn the IF
> shift one way or the other to the stops and see if you hear
> noise come up.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/25/2010 10:39 PM, David VE3VID wrote:
> >
> > Okay, so you think if I adjust my IF shift it will help?
> >
> >
> >
> > When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
> >
> >
> >
> >
> >
> >
> >
> >
> >> From:
> >> To: ;
> >> Subject: Re: [RTTY] INRAD filter question
> >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> >>
> >> you can probably use the BPF and IF shift to center LSB into the filters
> >> passband. Then you will have to use 2125/2295 for tones.
> >>
> >> 73
> >> Jim w7RY
> >>
> >>
> >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Daivd,

Check this post on my blog. It should be helpful for a circuit to generate
FSK via USB.

73 de Al, KE1FO

K3 #3055
K3 #4094
-----
Check out my Amateur Radio Contesting blog at ke1fo.wordpress.com.


On Sun, Sep 26, 2010 at 11:11 AM, David VE3VID <> wrote:

>
> Confusion is clearing a bit, check my thinking on this..................
> The 400hz filters are listening over a portion of the band away from the
> section where the mark and space tones will be heard. So the reason it
> sounds so beautifully quiet is because I'm listening to the null outside the
> filters bandpass. Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get
> the RTTY signal inside the passband. The 450 also has a menu option to
> change the receiver tone from 2125 to 1275hz. This may be irrelevant though
> as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a try
> then get back to the email thread. PLAN-B if this fails, is there a
> simple & inexpensive interface that I can use to do true FSK. USB to 13pin
> DIN...........??
>
>
>
> David
>
>
>
>
>
>
> > Date: Sat, 25 Sep 2010 23:00:31 -0400
> > From:
> > To:
> > Subject: Re: [RTTY] INRAD filter question
> >
> >
> > > Okay, so you think if I adjust my IF shift it will help?
> >
> > If the IF shift has enough range it will work. Find a "dead"
> > place on the band, select the narrow filers and turn the IF
> > shift one way or the other to the stops and see if you hear
> > noise come up.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> > On 9/25/2010 10:39 PM, David VE3VID wrote:
> > >
> > > Okay, so you think if I adjust my IF shift it will help?
> > >
> > >
> > >
> > > When I click either filter in its like a dead band as I tune along.
> Like a 60db attenuator is on.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >> From:
> > >> To: ;
> > >> Subject: Re: [RTTY] INRAD filter question
> > >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> > >>
> > >> you can probably use the BPF and IF shift to center LSB into the
> filters
> > >> passband. Then you will have to use 2125/2295 for tones.
> > >>
> > >> 73
> > >> Jim w7RY
> > >>
> > >>
> > >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.

If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
should get you to 2800 Hz which should be more than enough. Check
it though.

> PLAN-B if this fails, is there a simple& inexpensive interface
> that I can use to do true FSK. USB to 13pin DIN...........??

See the information on AA5AU's web page:
http://www.aa5au.com/rtty.html.
You will need a pair of NPN transistors driven from the RTS/DTR
lines of a typical USB to serial converter with EXTFSK to generate
the FSK/PTT signal. You can continue to use the Signalink USB for
PSK31/other digital modes and for receiving RTTY.

73,

... Joe, W4TV

On 9/26/2010 11:11 AM, David VE3VID wrote:
>
> Confusion is clearing a bit, check my thinking on
> this.................. The 400hz filters are listening over a
> portion of the band away from the section where the mark and space
> tones will be heard. So the reason it sounds so beautifully quiet is
> because I'm listening to the null outside the filters bandpass.
> Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a
> try then get back to the email thread. PLAN-B if this fails, is
> there a simple& inexpensive interface that I can use to do true FSK.
> USB to 13pin DIN...........??
>
>
>
> David
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. So its all good news. Adjusting the IF shift brought the RTTY signal into the passband of the 400hz filter using AFSK in LSB. Notwithstanding the technical reasons this worked, it was a beautiful thing to see for someone who had been doing casual RTTY for a year using SSB width filters. Conditions on 15 & 20m were pretty nice this afternoon and trolling through the RTTY band segment working one station after another...........sweet. I'm ecstatic. The 450 is now the dedicated digital rig.



I do think that getting my setup to transmit FSK would have some benefit........but Joe, I'm the guy you want sewing your face back on when you flip your sled over somewhere north of 60. If you have to wait for me to find a pair of NPN transistors first, well, it might not go so well.............hihihi :) Seriously...............do you know of a commercial product. Dont forget, it took me 7+ months to get the INRAD filters working :)

David






> Date: Sun, 26 Sep 2010 18:07:33 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> > get the RTTY signal inside the passband. The 450 also has a menu
> > option to change the receiver tone from 2125 to 1275hz. This may be
> > irrelevant though as it is for FSK mode.
>
> If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
> should get you to 2800 Hz which should be more than enough. Check
> it though.
>
> > PLAN-B if this fails, is there a simple& inexpensive interface
> > that I can use to do true FSK. USB to 13pin DIN...........??
>
> See the information on AA5AU's web page:
> http://www.aa5au.com/rtty.html.
> You will need a pair of NPN transistors driven from the RTS/DTR
> lines of a typical USB to serial converter with EXTFSK to generate
> the FSK/PTT signal. You can continue to use the Signalink USB for
> PSK31/other digital modes and for receiving RTTY.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/26/2010 11:11 AM, David VE3VID wrote:
> >
> > Confusion is clearing a bit, check my thinking on
> > this.................. The 400hz filters are listening over a
> > portion of the band away from the section where the mark and space
> > tones will be heard. So the reason it sounds so beautifully quiet is
> > because I'm listening to the null outside the filters bandpass.
> > Yes?
> >
> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> > get the RTTY signal inside the passband. The 450 also has a menu
> > option to change the receiver tone from 2125 to 1275hz. This may be
> > irrelevant though as it is for FSK mode.
> >
> >
> >
> > I'll be back in the op chair this afternoon and give these options a
> > try then get back to the email thread. PLAN-B if this fails, is
> > there a simple& inexpensive interface that I can use to do true FSK.
> > USB to 13pin DIN...........??
> >
> >
> >
> > David
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

Go to www.k4abt.com. He makes a RASCAL that works great for FSK RTTY with
the TS-450. I have 2 of them here, plus one for AFSK with my FT-840 when I
use it.

They are pretty cheap and they work very well. 73
Tom W7WHY


>
> So its all good news. Adjusting the IF shift brought the RTTY signal into
> the passband of the 400hz filter using AFSK in LSB. Notwithstanding the
> technical reasons this worked, it was a beautiful thing to see for
> someone who had been doing casual RTTY for a year using SSB width filters.
> Conditions on 15 & 20m were pretty nice this afternoon and trolling
> through the RTTY band segment working one station after
> another...........sweet. I'm ecstatic. The 450 is now the dedicated
> digital rig.
>
>
>
> I do think that getting my setup to transmit FSK would have some
> benefit........but Joe, I'm the guy you want sewing your face back on
> when you flip your sled over somewhere north of 60. If you have to wait
> for me to find a pair of NPN transistors first, well, it might not go so
> well.............hihihi :) Seriously...............do you know of a
> commercial product. Dont forget, it took me 7+ months to get the INRAD
> filters working :)
>
> David
>
>
>
>
>
>
>> Date: Sun, 26 Sep 2010 18:07:33 -0400
>> From:
>> To:
>> Subject: Re: [RTTY] INRAD filter question
>>
>>
>> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
>> > get the RTTY signal inside the passband. The 450 also has a menu
>> > option to change the receiver tone from 2125 to 1275hz. This may be
>> > irrelevant though as it is for FSK mode.
>>
>> If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
>> should get you to 2800 Hz which should be more than enough. Check
>> it though.
>>
>> > PLAN-B if this fails, is there a simple& inexpensive interface
>> > that I can use to do true FSK. USB to 13pin DIN...........??
>>
>> See the information on AA5AU's web page:
>> http://www.aa5au.com/rtty.html.
>> You will need a pair of NPN transistors driven from the RTS/DTR
>> lines of a typical USB to serial converter with EXTFSK to generate
>> the FSK/PTT signal. You can continue to use the Signalink USB for
>> PSK31/other digital modes and for receiving RTTY.
>>
>> 73,
>>
>> ... Joe, W4TV
>>
>> On 9/26/2010 11:11 AM, David VE3VID wrote:
>> >
>> > Confusion is clearing a bit, check my thinking on
>> > this.................. The 400hz filters are listening over a
>> > portion of the band away from the section where the mark and space
>> > tones will be heard. So the reason it sounds so beautifully quiet is
>> > because I'm listening to the null outside the filters bandpass.
>> > Yes?
>> >
>> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
>> > get the RTTY signal inside the passband. The 450 also has a menu
>> > option to change the receiver tone from 2125 to 1275hz. This may be
>> > irrelevant though as it is for FSK mode.
>> >
>> >
>> >
>> > I'll be back in the op chair this afternoon and give these options a
>> > try then get back to the email thread. PLAN-B if this fails, is
>> > there a simple& inexpensive interface that I can use to do true FSK.
>> > USB to 13pin DIN...........??
>> >
>> >
>> >
>> > David
>> >
>> >
>>
>> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.

Last spring I got some good info and help from RTTY hams here about loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x 400hz filters for the 8.83 and 455 IF stages. The units went into the radio slick, and the Kenwood menu options to activate the new filters went without incident. (INRAD No.s 103 & 104) Prior to this I have been able to do AFSK RTTY lots of DX, some contests, and some fun ragchews on RTTY........so the system works (MMTTY into a SignaLink USB)



I am trying out the filters for the first time this weekend during the CQWW RTTY contest. I have a problem. If I click both filters on and tune across the band I hear nothing. If I leave my IF stages wide and tune a RTTY station, as soon as I click in either of the new filters the RTTY station is gone and my S-meter drops way down. Its like an attenuator was suddenly clicked in, sometimes my meter goes to S-zero, the volume out of the radio drops significantly and MMTTY's tuning indicators go blank.



What am I missing, what did I forget............?? Must be something, these are popular filters. Any help appreciated.............



David





VE3VID Located in rural Canada
Solar power. Wood heat.
Mosley tribander @ 22m
2element delta-quad on 40m
Lots of space for dipoles,
bears and wolves......73

http://www.ve3vid.webs.com/



_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. What mode do you have the radio in?
73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The rig is set to LSB, all the standard setting for MMTTY





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:04:01 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> What mode do you have the radio in?
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Prior to this I have been able to do AFSK RTTY lots of DX, some
> contests, and some fun ragchews on RTTY........so the system works
> (MMTTY into a SignaLink USB)

This indicates you are probably using AFSK in USB. The narrow filters
are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
You may be able to use the narrow filters with AFSK if you use the
2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
confirm that.

73,

... Joe, W4TV


On 9/25/2010 8:40 PM, David VE3VID wrote:
>
> Last spring I got some good info and help from RTTY hams here about
> loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> 400hz filters for the 8.83 and 455 IF stages. The units went into
> the radio slick, and the Kenwood menu options to activate the new
> filters went without incident. (INRAD No.s 103& 104) Prior to this
> I have been able to do AFSK RTTY lots of DX, some contests, and some
> fun ragchews on RTTY........so the system works (MMTTY into a
> SignaLink USB)
>
>
>
> I am trying out the filters for the first time this weekend during
> the CQWW RTTY contest. I have a problem. If I click both filters on
> and tune across the band I hear nothing. If I leave my IF stages
> wide and tune a RTTY station, as soon as I click in either of the new
> filters the RTTY station is gone and my S-meter drops way down. Its
> like an attenuator was suddenly clicked in, sometimes my meter goes
> to S-zero, the volume out of the radio drops significantly and
> MMTTY's tuning indicators go blank.
>
>
>
> What am I missing, what did I forget............?? Must be
> something, these are popular filters. Any help
> appreciated.............
>
>
>
> David
>
>
>
>
>
> VE3VID Located in rural Canada Solar power. Wood heat.
> Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> dipoles, bears and wolves......73
>
> http://www.ve3vid.webs.com/
>
>
> _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set by MMTTY is 2125/170



> Date: Sat, 25 Sep 2010 21:32:26 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Prior to this I have been able to do AFSK RTTY lots of DX, some
> > contests, and some fun ragchews on RTTY........so the system works
> > (MMTTY into a SignaLink USB)
>
> This indicates you are probably using AFSK in USB. The narrow filters
> are aligned for RTTY (FSK) mode which is in LSB using "high tones" -
> 2125 Hz Mark, 2295 Hz Space (TS-450/690 Instruction Manual, pg. 35).
> You may be able to use the narrow filters with AFSK if you use the
> 2125/2295 Hz tone pair in LSB but I don't have access to a TS-450 to
> confirm that.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 9/25/2010 8:40 PM, David VE3VID wrote:
> >
> > Last spring I got some good info and help from RTTY hams here about
> > loading a set of INRAD filters into my Kenwood TS-450s. I chose 2 x
> > 400hz filters for the 8.83 and 455 IF stages. The units went into
> > the radio slick, and the Kenwood menu options to activate the new
> > filters went without incident. (INRAD No.s 103& 104) Prior to this
> > I have been able to do AFSK RTTY lots of DX, some contests, and some
> > fun ragchews on RTTY........so the system works (MMTTY into a
> > SignaLink USB)
> >
> >
> >
> > I am trying out the filters for the first time this weekend during
> > the CQWW RTTY contest. I have a problem. If I click both filters on
> > and tune across the band I hear nothing. If I leave my IF stages
> > wide and tune a RTTY station, as soon as I click in either of the new
> > filters the RTTY station is gone and my S-meter drops way down. Its
> > like an attenuator was suddenly clicked in, sometimes my meter goes
> > to S-zero, the volume out of the radio drops significantly and
> > MMTTY's tuning indicators go blank.
> >
> >
> >
> > What am I missing, what did I forget............?? Must be
> > something, these are popular filters. Any help
> > appreciated.............
> >
> >
> >
> > David
> >
> >
> >
> >
> >
> > VE3VID Located in rural Canada Solar power. Wood heat.
> > Mosley tribander @ 22m 2element delta-quad on 40m Lots of space for
> > dipoles, bears and wolves......73
> >
> > http://www.ve3vid.webs.com/
> >
> >
> > _______________________________________________ RTTY mailing list
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

I have the same setup as you--2 Inrad filters. They won't work in AFSK.
You have to run FSK to use the narrow CW filters. 73
Tom W7WHY


>
> Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> by MMTTY is 2125/170
>
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Wow. Well if thats the case it was an expensive waste of $300.

However, why would the filters be unusable in AFSK(LSB)? Dont they just narrow the IF bandpass to 400hz?





> From:
> To:
> Date: Sat, 25 Sep 2010 18:43:48 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> Hi David
>
> I have the same setup as you--2 Inrad filters. They won't work in AFSK.
> You have to run FSK to use the narrow CW filters. 73
> Tom W7WHY
>
>
> >
> > Ummmm.......nope. I had the rig in LSB (AFSK). And the tone pair as set
> > by MMTTY is 2125/170
> >
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. FSK is MUCH better than AFSK.... What are you using for a computer and
software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
mode.

Is there a particular reason you don't want to run FSK?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. you can probably use the BPF and IF shift to center LSB into the filters
passband. Then you will have to use 2125/2295 for tones.

73
Jim w7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. David,

I have a Kenwood TS-2000 and used the SignaLink at first and still use it for modes other then RTTY. On the TS-2000 you need to run FSK to take advantage of the built in filters. A friend made me a custom interface from parts he already had and I've been running FSK ever since. The filters make all the difference in the world in contest when signals are on top of each other.

David - K2DSL

-----Original Message-----
From: David VE3VID <>
Sender: rtty-
Date: Sat, 25 Sep 2010 22:06:41
To: RTTY contest group<>
Subject: Re: [RTTY] INRAD filter question



The laptop is a Gateway running XP, N1MM, into a SignaLink USB outboard sound card, into the ACC port on the TS-450s. I am neither for or against true FSK, just the SignaLink allows me to do many other types of "sound card" digital modes such as PSK and Olivia.



I was able to do RTTY no problem with the system before the 400hz filters





> From:
> To: ;
> Date: Sat, 25 Sep 2010 18:52:16 -0700
> Subject: Re: [RTTY] INRAD filter question
>
> FSK is MUCH better than AFSK.... What are you using for a computer and
> software? I use windows XP and MMTTY with N1MM. Works just fine in FSK
> mode.
>
> Is there a particular reason you don't want to run FSK?
>
> 73
> Jim W7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Okay, so you think if I adjust my IF shift it will help?



When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.








> From:
> To: ;
> Subject: Re: [RTTY] INRAD filter question
> Date: Sat, 25 Sep 2010 19:14:30 -0700
>
> you can probably use the BPF and IF shift to center LSB into the filters
> passband. Then you will have to use 2125/2295 for tones.
>
> 73
> Jim w7RY
>
>
> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > Okay, so you think if I adjust my IF shift it will help?

If the IF shift has enough range it will work. Find a "dead"
place on the band, select the narrow filers and turn the IF
shift one way or the other to the stops and see if you hear
noise come up.

73,

... Joe, W4TV

On 9/25/2010 10:39 PM, David VE3VID wrote:
>
> Okay, so you think if I adjust my IF shift it will help?
>
>
>
> When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
>
>
>
>
>
>
>
>
>> From:
>> To: ;
>> Subject: Re: [RTTY] INRAD filter question
>> Date: Sat, 25 Sep 2010 19:14:30 -0700
>>
>> you can probably use the BPF and IF shift to center LSB into the filters
>> passband. Then you will have to use 2125/2295 for tones.
>>
>> 73
>> Jim w7RY
>>
>>
>> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. If the rig is truly dead, do you have the filters in the correct slots?

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Confusion is clearing a bit, check my thinking on this.................. The 400hz filters are listening over a portion of the band away from the section where the mark and space tones will be heard. So the reason it sounds so beautifully quiet is because I'm listening to the null outside the filters bandpass. Yes?

The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get the RTTY signal inside the passband. The 450 also has a menu option to change the receiver tone from 2125 to 1275hz. This may be irrelevant though as it is for FSK mode.



I'll be back in the op chair this afternoon and give these options a try then get back to the email thread. PLAN-B if this fails, is there a simple & inexpensive interface that I can use to do true FSK. USB to 13pin DIN...........??



David






> Date: Sat, 25 Sep 2010 23:00:31 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > Okay, so you think if I adjust my IF shift it will help?
>
> If the IF shift has enough range it will work. Find a "dead"
> place on the band, select the narrow filers and turn the IF
> shift one way or the other to the stops and see if you hear
> noise come up.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/25/2010 10:39 PM, David VE3VID wrote:
> >
> > Okay, so you think if I adjust my IF shift it will help?
> >
> >
> >
> > When I click either filter in its like a dead band as I tune along. Like a 60db attenuator is on.
> >
> >
> >
> >
> >
> >
> >
> >
> >> From:
> >> To: ;
> >> Subject: Re: [RTTY] INRAD filter question
> >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> >>
> >> you can probably use the BPF and IF shift to center LSB into the filters
> >> passband. Then you will have to use 2125/2295 for tones.
> >>
> >> 73
> >> Jim w7RY
> >>
> >>
> >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Daivd,

Check this post on my blog. It should be helpful for a circuit to generate
FSK via USB.

73 de Al, KE1FO

K3 #3055
K3 #4094
-----
Check out my Amateur Radio Contesting blog at ke1fo.wordpress.com.


On Sun, Sep 26, 2010 at 11:11 AM, David VE3VID <> wrote:

>
> Confusion is clearing a bit, check my thinking on this..................
> The 400hz filters are listening over a portion of the band away from the
> section where the mark and space tones will be heard. So the reason it
> sounds so beautifully quiet is because I'm listening to the null outside the
> filters bandpass. Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to get
> the RTTY signal inside the passband. The 450 also has a menu option to
> change the receiver tone from 2125 to 1275hz. This may be irrelevant though
> as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a try
> then get back to the email thread. PLAN-B if this fails, is there a
> simple & inexpensive interface that I can use to do true FSK. USB to 13pin
> DIN...........??
>
>
>
> David
>
>
>
>
>
>
> > Date: Sat, 25 Sep 2010 23:00:31 -0400
> > From:
> > To:
> > Subject: Re: [RTTY] INRAD filter question
> >
> >
> > > Okay, so you think if I adjust my IF shift it will help?
> >
> > If the IF shift has enough range it will work. Find a "dead"
> > place on the band, select the narrow filers and turn the IF
> > shift one way or the other to the stops and see if you hear
> > noise come up.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> > On 9/25/2010 10:39 PM, David VE3VID wrote:
> > >
> > > Okay, so you think if I adjust my IF shift it will help?
> > >
> > >
> > >
> > > When I click either filter in its like a dead band as I tune along.
> Like a 60db attenuator is on.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >> From:
> > >> To: ;
> > >> Subject: Re: [RTTY] INRAD filter question
> > >> Date: Sat, 25 Sep 2010 19:14:30 -0700
> > >>
> > >> you can probably use the BPF and IF shift to center LSB into the
> filters
> > >> passband. Then you will have to use 2125/2295 for tones.
> > >>
> > >> 73
> > >> Jim w7RY
> > >>
> > >>
> > >> --------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.

If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
should get you to 2800 Hz which should be more than enough. Check
it though.

> PLAN-B if this fails, is there a simple& inexpensive interface
> that I can use to do true FSK. USB to 13pin DIN...........??

See the information on AA5AU's web page:
http://www.aa5au.com/rtty.html.
You will need a pair of NPN transistors driven from the RTS/DTR
lines of a typical USB to serial converter with EXTFSK to generate
the FSK/PTT signal. You can continue to use the Signalink USB for
PSK31/other digital modes and for receiving RTTY.

73,

... Joe, W4TV

On 9/26/2010 11:11 AM, David VE3VID wrote:
>
> Confusion is clearing a bit, check my thinking on
> this.................. The 400hz filters are listening over a
> portion of the band away from the section where the mark and space
> tones will be heard. So the reason it sounds so beautifully quiet is
> because I'm listening to the null outside the filters bandpass.
> Yes?
>
> The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> get the RTTY signal inside the passband. The 450 also has a menu
> option to change the receiver tone from 2125 to 1275hz. This may be
> irrelevant though as it is for FSK mode.
>
>
>
> I'll be back in the op chair this afternoon and give these options a
> try then get back to the email thread. PLAN-B if this fails, is
> there a simple& inexpensive interface that I can use to do true FSK.
> USB to 13pin DIN...........??
>
>
>
> David
>
>

_______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. So its all good news. Adjusting the IF shift brought the RTTY signal into the passband of the 400hz filter using AFSK in LSB. Notwithstanding the technical reasons this worked, it was a beautiful thing to see for someone who had been doing casual RTTY for a year using SSB width filters. Conditions on 15 & 20m were pretty nice this afternoon and trolling through the RTTY band segment working one station after another...........sweet. I'm ecstatic. The 450 is now the dedicated digital rig.



I do think that getting my setup to transmit FSK would have some benefit........but Joe, I'm the guy you want sewing your face back on when you flip your sled over somewhere north of 60. If you have to wait for me to find a pair of NPN transistors first, well, it might not go so well.............hihihi :) Seriously...............do you know of a commercial product. Dont forget, it took me 7+ months to get the INRAD filters working :)

David






> Date: Sun, 26 Sep 2010 18:07:33 -0400
> From:
> To:
> Subject: Re: [RTTY] INRAD filter question
>
>
> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> > get the RTTY signal inside the passband. The 450 also has a menu
> > option to change the receiver tone from 2125 to 1275hz. This may be
> > irrelevant though as it is for FSK mode.
>
> If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
> should get you to 2800 Hz which should be more than enough. Check
> it though.
>
> > PLAN-B if this fails, is there a simple& inexpensive interface
> > that I can use to do true FSK. USB to 13pin DIN...........??
>
> See the information on AA5AU's web page:
> http://www.aa5au.com/rtty.html.
> You will need a pair of NPN transistors driven from the RTS/DTR
> lines of a typical USB to serial converter with EXTFSK to generate
> the FSK/PTT signal. You can continue to use the Signalink USB for
> PSK31/other digital modes and for receiving RTTY.
>
> 73,
>
> ... Joe, W4TV
>
> On 9/26/2010 11:11 AM, David VE3VID wrote:
> >
> > Confusion is clearing a bit, check my thinking on
> > this.................. The 400hz filters are listening over a
> > portion of the band away from the section where the mark and space
> > tones will be heard. So the reason it sounds so beautifully quiet is
> > because I'm listening to the null outside the filters bandpass.
> > Yes?
> >
> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
> > get the RTTY signal inside the passband. The 450 also has a menu
> > option to change the receiver tone from 2125 to 1275hz. This may be
> > irrelevant though as it is for FSK mode.
> >
> >
> >
> > I'll be back in the op chair this afternoon and give these options a
> > try then get back to the email thread. PLAN-B if this fails, is
> > there a simple& inexpensive interface that I can use to do true FSK.
> > USB to 13pin DIN...........??
> >
> >
> >
> > David
> >
> >
>
> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. Hi David

Go to www.k4abt.com. He makes a RASCAL that works great for FSK RTTY with
the TS-450. I have 2 of them here, plus one for AFSK with my FT-840 when I
use it.

They are pretty cheap and they work very well. 73
Tom W7WHY


>
> So its all good news. Adjusting the IF shift brought the RTTY signal into
> the passband of the 400hz filter using AFSK in LSB. Notwithstanding the
> technical reasons this worked, it was a beautiful thing to see for
> someone who had been doing casual RTTY for a year using SSB width filters.
> Conditions on 15 & 20m were pretty nice this afternoon and trolling
> through the RTTY band segment working one station after
> another...........sweet. I'm ecstatic. The 450 is now the dedicated
> digital rig.
>
>
>
> I do think that getting my setup to transmit FSK would have some
> benefit........but Joe, I'm the guy you want sewing your face back on
> when you flip your sled over somewhere north of 60. If you have to wait
> for me to find a pair of NPN transistors first, well, it might not go so
> well.............hihihi :) Seriously...............do you know of a
> commercial product. Dont forget, it took me 7+ months to get the INRAD
> filters working :)
>
> David
>
>
>
>
>
>
>> Date: Sun, 26 Sep 2010 18:07:33 -0400
>> From:
>> To:
>> Subject: Re: [RTTY] INRAD filter question
>>
>>
>> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
>> > get the RTTY signal inside the passband. The 450 also has a menu
>> > option to change the receiver tone from 2125 to 1275hz. This may be
>> > irrelevant though as it is for FSK mode.
>>
>> If the narrow filter is centered at 600 Hz in LSB, a 2.2 KHz offset
>> should get you to 2800 Hz which should be more than enough. Check
>> it though.
>>
>> > PLAN-B if this fails, is there a simple& inexpensive interface
>> > that I can use to do true FSK. USB to 13pin DIN...........??
>>
>> See the information on AA5AU's web page:
>> http://www.aa5au.com/rtty.html.
>> You will need a pair of NPN transistors driven from the RTS/DTR
>> lines of a typical USB to serial converter with EXTFSK to generate
>> the FSK/PTT signal. You can continue to use the Signalink USB for
>> PSK31/other digital modes and for receiving RTTY.
>>
>> 73,
>>
>> ... Joe, W4TV
>>
>> On 9/26/2010 11:11 AM, David VE3VID wrote:
>> >
>> > Confusion is clearing a bit, check my thinking on
>> > this.................. The 400hz filters are listening over a
>> > portion of the band away from the section where the mark and space
>> > tones will be heard. So the reason it sounds so beautifully quiet is
>> > because I'm listening to the null outside the filters bandpass.
>> > Yes?
>> >
>> > The TS-450 has a +/-2.2Khz IF shift. This may not be quite enough to
>> > get the RTTY signal inside the passband. The 450 also has a menu
>> > option to change the receiver tone from 2125 to 1275hz. This may be
>> > irrelevant though as it is for FSK mode.
>> >
>> >
>> >
>> > I'll be back in the op chair this afternoon and give these options a
>> > try then get back to the email thread. PLAN-B if this fails, is
>> > there a simple& inexpensive interface that I can use to do true FSK.
>> > USB to 13pin DIN...........??
>> >
>> >
>> >
>> > David
>> >
>> >
>>
>> _______________________________________________
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe. :)

73
Jim W7RY


--------------------------------------------------
___________________________________________________

Posted on the RTTY mailing list. Go to http://lists.contesting.com/mailman/listinfo/RTTY to subscribe.