[Elecraft] Muting mic when voice keying (was K3 Monitor)

[Barry N1EU]

Don Wilhelm-4 wrote:
> 
> I do not believe that muting the mic when PTT is asserted from the 
> RS-232 input is a good idea.  Many logging programs use the RS-232 
> signals to activate transmit.
> 
Actually, I think that would be an excellent option:  mute the mic input
when PTT is asserted via the CAT RS-232 RTS/DTR line.  In a typical contest
setup, your computer logger/dvk'er will feed audio into K3 line in and
assert PTT via RS-232 CAT port.  When you use your mic, you can use K3 PTT
input.

This would solve N1MM Logger's inability to mute the K3 mic while voice
keying because the K3 doesn't offer separate level controls for mic and line
(like the Orion does).

73,
Barry N1EU

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