If its like most current computer microphones tip and ring are connected in parallel.
73, ... Joe, W4TV > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Jim Brown > Sent: Thursday, December 24, 2009 12:11 AM > To: Elecraft List > Subject: Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and > a BARGAIN) > > > On Wed, 23 Dec 2009 16:56:44 -0800, K6LE wrote: > > >It's a stereo plug > > No, it's not a "stereo" plug, it's a 3-circuit plug the CAN be used > for stereo, or can be used for other things like an electret mic. It > could also be used to carry shielded balanced audio wiring. > > With this mic, the tip is audio high, the sleeve is audio return and > cable shield, and the ring is +Vdc to power the tiny impedance > converter inside the mic. For more on this, see > > http://audiosystemsgroup.com/HamInterfacing.pdf > > and the Appendix on audio for ham radio in > > http://audiosystemsgroup.com/RFI-Ham.pdf > > 73, > > Jim K9YC > ______________________________________________________________ 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
