[RTTY] INRAD filter question

[David VE3VID]

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: lists at subich.com
> To: rtty at contesting.com
> 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/
> >
> >
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