In article ,
"Steve" wrote:

Still on dial up here.....my link times out before I can
download a manual.

Steve-

I downloaded the manual to have in my collection. It is in 11 parts in
".rar" compressed format, of about 2 megabytes each. If you are
persistent, you should be able to download it one part at a time. You
would then collect the parts in one folder and decompress part one. The
decompression program should automatically incorporate all into one 20
Megabyte .PDF file. (I used StuffIt Expander on a Macintosh.)

To answer your original question, the microphone is 600 Ohms impedance.
I think many CB dynamic replacement microphones would work if wired
correctly. Pin 1 is ground (Shield), 2 is Microphone hot, 3 is
Push-to-talk and pin 4 is not used.

Fred
K4DII