Hi, This thread had me thoroughly confused for a while, but I now realize that it applies to the KX3 and KX3 *only*. It does *not* apply to the K3 which *must* have bias turned on to use any Electret microphone, whether by Heil, Yamaha or Koss. In the K3 the ring on the microphone socket is *floating* and can obviously not by used for an alternate source of bias. I verified that the Yamaha and Koss both have the tip and ring connected together. The Heil comes with a mono (TS) plug. All of this is compatible with the K3 if the bias is turned on. I am not sure what's up with the KX3 and the "cleaner" audio achieved with the bias turned off. It seems to me that this is not a choice that users should have to make. Until I saw this thread, as far as I know the advice was to always (for both the K3 and the KX3) turn bias on to use any Electret microphone
AB2TC - Knut Don Wilhelm wrote > Ed, > > You can use the stereo mic connector directly into the KX3 if you turn > MIC BTN off in the menu. You should also turn off MIC BIAS which > results in a cleaner signal - the mic then gets its bias from the LOGIC > residual voltage that is normally applied to the ring. > > You can use the XMIT button to initiate transmit, or use VOX. > That may be inadequate for your purposes since you need to activate PTT > from your sequencer. The only alternative is to build a special cable > or as has been suggested several times on this reflector, use an adapter > with a stereo male plug and one jack that connects to the ring and > another to the tip. You might search the archives to see some of the > sources and part numbers. If you use an adapter like that, you do not > have to turn off MIC BTN and MIC BIAS. > The stereo plug does connect the LOGIC ground and the Signal ground > together, but no apparent harm has been mentioned because of that. > > 73, > Don W3FPR > <snip> -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ 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]
