Rich,
I don't think CAT control is necessary in this case, because in this
configuration, all of the tx/rx is on one band (630m) and one frequency
(474.2 kHz, used by JT9, WSPR and other digital modes, unlike HF bands
where they are on different frequencies). I haven't yet found anyone
else with a K3/K3S operating in this configuration on that band, but a
number of ops with other brands of rigs set things up this way, with
several decoders running all in VOX mode. I assume there must be a way
to do this with the K3S.
Thanks and 73,
Frank K6FOD
On 1/28/20 1:52 PM, Richard Ferch wrote:
However, you also said you wanted to run multiple instances of WSJT-X.
That's a different matter, and PTT/VOX is only a small part of it. If you
try to run more than one instance of WSJT-X, only the first instance will
be able to use CAT control. Any other instances will not be able to open
the serial port used to control the radio, so they will not have CAT
control of any kind, including not only PTT control, but also frequency and
mode control.
JT9 uses CAT control not only for PTT, but also for frequency control
(split operation, and/or specific frequencies for different modes on
various bands). The instance you use for JT9 and similar modes should
probably have full CAT control. WSPR, on the other hand, does not really
need CAT control once you have tuned the transceiver to the correct
frequency for the band.
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