Use a stereo to mono splitter. One leg is the mic, the other is PTT. https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/ <https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/>
wunder Walter Underwood [email protected] http://observer.wunderwood.org/ (my blog) > On Apr 18, 2017, at 10:53 AM, Michael Dinkelman <[email protected]> wrote: > > Trying to get PTT working with a boom mic into the KX3. > The microphone works fine using VOX into the microphone jack of the KX3. > Of course, XMIT works too. > > Trying to trigger PTT using the GPIO port of the KX3/KXPA100 accessory > cable. > 1) MICBTN configured to OFF (tried PTT too) > 2) ACC2 IO configured to LO=PTT > > No PTT when using a mono plug into the GPIO port > Gotta be something simple. What am I missing? > > (I would try at the ACC2 port on the KX3 itself but no 2.5mm TRRS plugs > at this point) > > cheers > mike, n7wa > ______________________________________________________________ > 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]

