[App_rpt-users] Re Kenwood Remote TRX

Ralph A. Schmid, dk5ras ralph at radio-link.net
Wed Mar 17 11:13:36 EDT 2010


> Well, sorry but *WRONG!!!*. 1200 packet mode rolls off the
> low side of the audio spectrum and makes CTCSS decoding completely
> impossible.

This should be normal behaviour, as 1k2 packet is AFSK/FFSK and relies on
normal audio path, with pre/deemphasis and 300-3000 Hz AF filtering for best
performance.

Ralph.

> JIM
>  
>
> ----------------------------------------
> > From: jann at gmx.de
> > To: telesistant at hotmail.com; app_rpt-users at qrvc.com
> > Subject: Re [App_rpt-users] Kenwood Remote TRX
> > Date: Wed, 17 Mar 2010 15:06:05 +0100
> >
> > Hello Jim,
> >
> >> Yep 9600 baud packet mode is
> >> perfict. You will need to feed the URI output through the 2X
> >> amplifier since the Kenwood takes boat-loads of audio to
> >> modulate it properly.
> >
> > I checked the TM-D700 manual:
> > "Output of detected 9600 bps data (500 mVP-P, 10 kOhm) -> Also
> functions as
> > a common pin for 1200 bps and 9600 bps data output."
> >
> > RX seems the same as for 9600 baud packet mode. For TX i tried
> 1200 bps with
> > a low setting of "txvoice" (radio tune txvoice 100). Seems to
> be another way
> > without using the amplifier + txboost=1. Or am I wrong?
> >
> >> Set carrier detect and rxctcss to dsp
> >> and txmixa to voice. The radio makes its own CTCSS on transmit.
> >
> > Yep, it works fine with iaxRpt for Windows. How can I change the inital
> > frequency 146.580 MHz to another one? It is not a frequency for
> hamradio in
> > germany. I found 146.580 MHz in app_rpt.c, but I hope there is
> another way
> > to change it ;)
> >
> > Thanks!
> > 73,
> > Jann
> >
>
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