[amsat-bb] Re: gpredict and ft-817 cat control

[Greg Dolkas]

What happens if you do try to change frequencies during transmit?  There is a race condition between the status check and frequency programming where the mike PTT button could be pressed.
Greg. KO6TH
-- 
Sent from my new toy...  Please ignore tupos.

Erich Eichmann <erich.eichmann at t-online.de> wrote:

>Hello,
>To adjust the TX frequency via CATcontrol a program first has to toggle
>the 
>VFOs (command hex. 81)  to get access to the TX VFO. After adjusting
>the TX 
>frequency it has to toggle the VFOs back, of course.
>
>Also, it is necessary to check the TX status (command hex. F7)  before 
>sending frequency commands. The frequencies must not be changed during
>TX. 
>The adjusment has to be suspended until the radio is in RX again.
>
>73s, Erich, DK1TB
>
>----- Original Message ----- 
>From: "Richard Ferryman" <g4bbh at btinternet.com>
>To: <amsat-bb at amsat.org>
>Sent: Tuesday, March 26, 2013 2:00 AM
>Subject: [amsat-bb] gpredict and ft-817 cat control
>
>
>> Does anyone know a way around the problem that gpredict can only
>control 
>> the FT-817 downlink frequency.  I suspect there is a limitation in
>the 
>> hamlib control for this rig.  The gpredict manual says 'the TX
>frequency 
>> can not be adjusted via the CAT interface (e.g. Yaesu FT-817)' but
>SatPC32 
>> on windows manages to handle TX and RX so it must be possible.
>> Dick G4BBH
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>
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