On Thu, 27 Nov 2008 15:57:11 -0800 (PST), Chuck - AE4CW wrote: >The output is XLR low-impedance >balanced, so you will need an in-line transformer to convert to the K3's >unbalanced input (available from Radio Shack and Frey's).
NO, NO, NO! You do NOT need a transformer -- in fact, should NOT use a transformer. A balanced mic has two hots and a shield. To connect it to an unbalanced input, wire one "hot" to "hot" in the radio, the other hot to "mic return" in the radio, and the cable shield to the chassis (the shell of the front panel mic connector). http://audiosystemsgroup.com/HamInterfacing.pdf http://audiosystemsgroup.com/RFI-Ham.pdf Also, the standard "ball mics" that look like SM58s are NOT a great choice for ham radio because they are simple cardioids that have proxmity effect (bass boost when used close-up). Some far better choices are listed in the pdf above. 73, Jim Brown K9YC _______________________________________________ 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
