[Elecraft] K3 Mike connections

[Elliott Lawrence]

The mike jack connections as shown on page 13 are pin 1 audio, pin 7 and 8 
ground.  I assume that either or both ground pins can be used and their is 
no need to use one versus the other.  My experience with other radios using 
multiple ground pins is that one had be associated with the audio input and 
other for control purposes.  The isolation was necessary to prevent noise on 
the audio input.

Thanks,
Elliott WA6TLA