But that leads to a question that may have been answered already- Is
the audio input hard selected, as it appears, or can multiple inputs
be used, depending on where PTT is asserted?
There is one PTT line inside the radio. Thus, the K3 has no way of
knowing if you pressed a PTT button on your mic, a footswitch, or the
computer pressed it for you via DTR or RTS. You specify to the K3 which
of three possible sources (front panel mic, rear panel mic, or line) it
should use for Tx audio, and it uses that source.
73,
Lyle KK7P
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