Bob, W1SRB wrote: down in the bottom of my parts box was a handheld speaker/microphone that I picked up at a flea market a long time ago - it was probably from a CB rig as it has a 2 character display as well as the PTT switch, volume and squelch controls and an up/down switch. If I remove everything except the speaker/mic, PTT switch and up/down switch and rewire it, can I use it on the K2. Specifically, will the speaker/mic element work as a mic on the K2?
------------------------------------------------------ Possibly, but don't count on it. I've tried a variety of dynamic mics (which a "speaker-mic" is) on my K2. None of them produced enough output to fully drive the K2 on all bands. However, you can make an excellent microphone by going to Radio Shack and buying one of their electret mic elements for about US$2 and mounting it in the enclosure! You'll need to pick up the 5 volts available at the mic connector to power it, so you'll need 4 wires in the cord (ground, mic hot, +5v and the push-to-talk closure to ground) but with all that stuff in the current mic you'll probably have plenty of wires available. RS also sells 8 pin connectors required by the K2. Mine is mounted in a hand-held enclosure that originally had a dynamic element that sounded FB but had just marginal drive. The dynamic element was round but much bigger than the electret, so I wrapped my electret in some weather-stripping I had laying around (sticky on one side) to make a round cushion that fit snugly in the space for the original element. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
