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Re: TS-790a Mute and AO-40

Hrm..perhaps I was wrong on my initial reply about this!

I've hooked up AO40Rcv to my TS-790A.  I have 2M in the MAIN band (using 
TranSystem converted to 144MHz). I've set AO40Rcv to use "Manual Rate 
Control" and have "Doppler Correction" set to +10Hz/sec.  The VFO is indeed 
slowly moving down in frequency, and I do *NOT* hear the mute on the 
audio!  VFO freq. goes up with -10Hz/sec--and still no muting!

So--not sure when the muting happens.  Maybe when it's switching from MAIN 
to SUB, and back and forth via serial commands?  Not sure which command(s) 
cause it, but I still hear obvious muting on the MAIN band while working a 
digital bird with Wisp+WispDDE controlling both uplink/downlink freqs.

This simple test is encouraging, Rich.  Maybe you can work S-band telem. 
okay without doing the anti-mute mod.

If I'm lucky enough to slip home for a "long lunch" during the good pass 
tomorrow, I'll give it a shot and let you know how it went.



At 04:53 AM 4/29/2001, Rich Dailey, KA8OKH wrote:

>I have an unmodified Kenwood ts-790a with the "mute
>problem"  when being controlled by the pc.
>Would like to gather comments regarding use of the 790a
>for tlm reception of ao-40 (144mhz).  Does the rx work unmodified,
>does the modification really help,  etc.  I trying to determine whether
>or not to freq convert a transystem for use with this radio (790 doesn't
>rx 123 mhz).
>Using Fodtrack and ao40rcv.
>tnx de Rich
>Rich Dailey, KA8OKH - Phyllis Dailey, KB4NPI
>Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
>To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

Mark L. Hammond  [N8MH]

Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
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