Frank; The rear-panel mic input on the K3 and K3S is actually a stereo jack. The ring connector is not connected. Plug the CM-500’s mic plug in (as I do), and it will work just fine! Remember to enable bias on the rear panel Mic as W3FPR noted.
The CM-500 is an excellent headset for use with the K3. You should get many years of excellent service form it. 73! Jack, W6FB > On May 5, 2020, at 7:43 PM, Frank O'Donnell <[email protected]> wrote: > > Thanks for the clear instructions from Don, and the helpful suggestions from > everyone else. Piecing it all together, will this basically work?: > > -- On the K3S, plug the CM500's mike and phone plugs into the respective > jacks on the rig's rear panel. Wire a momentary-contact switch to an RCA plug > inserted into the rig's PTT IN jack to serve as a manual PTT switch. > > -- On the KX3, plug the headset's mike and phone plugs into the respective > jacks, and use a momentary-contact switch on a mono-style 1/8" plug in the > ACC2 jack as a manual PTT switch. > > The only thing I'm concerned about is the issue of mono vs stereo plugs. For > example, the CM500's mike plug has stereo-style contacts, whereas the mic in > jack on the K3S is marked "mono." There aren't any issues there? > > On other points, if I were going all-in on becoming a regular phone operator > I might look at other headsets such as the Heils. But what I'm looking at is > being a bit player on a couple of nets very occasionally at most, so the > CM500 seemed like a decent option. > > Re VOX vs PTT, I can understand the convenience of the former, but being an > occasional throat-clearer I wouldn't want to become a distractions on those > nets. > > Thanks again, > > Frank > > > On 5/5/20 4:49 PM, Don Wilhelm wrote: >> Frank, >> >> For the K3S, just plug the microphone and headphone plugs into the rear >> panel jacks. Set the MIC SEL to RP and turn bias on. >> >> For the KX3. the easy way is to just turn MIC BTN off and plug it in. That >> microphone needs bias, and it will be supplied by the digital DC that >> normally is used for the MIC Button functions. >> >> The harder way for the KX3 is to make an adapter (but it is not that hard) >> Be aware that, like most computer microphones, the tip and the ring of the >> plug are wired together - so if you make an adapter, you must use a stereo >> jack so the audio is not shorted to ground. >> >> If you make an adapter, you can include a connection for a PTT switch, but >> without that, you can put the KX3 into transmit with the XMIT button. >> >> 73, >> Don W3FPR >> >> On 5/5/2020 7:31 PM, Frank O'Donnell 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]
