[Elecraft] KX3: Cleaner audio with Yamaha CM500, also PTT

[Walter Underwood]

Finally got around to writing up my simple hack for cleaner mic bias with the KX3 and Yamaha CM500. Along the way, I spotted something that will make all us cheap hams happy. It looks like the Koss SB40 ($25) is the same headset as the Yamaha CM500 ($55).

But we really care about the better audio quality, right?

Also, this makes it easy to have a separate PTT hand switch or foot switch.

http://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/

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http://observer.wunderwood.org/ (my blog)