Hi Randy,
I notice here that when you changed TX from VFO A to B, you assumed the TX mode
would become the same as the SUB RX mode because it was assigned to VFO B too.
My first thought is of course it should. But should it? With a normal split
situation, I'd think you'd want it to be the same as MAIN RX. Tricky. TX mode
is
set indirectly, and not always as expected.
73,
Lin
WB1AIW
Randy K4QO wrote:
> This IS a problem - consider this scenario (this is how it happened to
> me...)
>
> I was listening to 30 meter CW (Main Rcvr) and also listening to a 60
> meter channel (USB) on the Subrcvr. A station I wanted to talk to
> came on the 60 meter channel. I selected the TX to use VFO B. They
> reported that I was well off frequency. I immediately signed and
> investigated and found that when the Main rcvr/VFO A was set to a CW
> mode, the transmitter set to use the B VFO for USB was not on frequency
> during transmit only. During rcv it was on frequency.
>
> What this means is that there is a "booby trap" if your modes between
> the two vfo/rcvrs is different (even though you are not operating split)
> that could cause you to transmit outside the band or in the case of 60
> meters, well off frequency - which is very bad.
>
> I wasn't trying to operate split with two different modes. I was
> listening on two different bands with different modes.
>
> 73,
> Randy
> K4QO
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>
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