For the KX3, an off-the-shelf stereo-to-mono splitter will separate the mic and PTT lines. It also separates the mic bias (clean) from the logic signal (not so clean). Details here:
https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/ For transmit audio setup, I collected various bits of knowledge from the manual and this list into a single article. https://observer.wunderwood.org/2015/09/09/transmit-audio-and-compression-with-the-elecraft-kx3/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 5, 2020, at 4:31 PM, Frank O'Donnell <[email protected]> wrote: > > Phone newbie here. Any recommendations on off-the-shelf cables or adapters, > and a handheld switch, to enable use of a Yamaha CM500 headset along with PTT > functionality on both a K3S and KX3? > > Thanks much, > > Frank K6FOD > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

