WIRING FOR ASTATIC 877L DESK MIC TO YAESU 8 PIN
I cant find info on this on the net and Ive tried a few different combinations to wire this to my FT-990 which is a standard Yaesu 8 pin. Microphone wire colors are red, black, white, sheild, green
astatic mic wiring
Hi KC9NGH, Try this site, there is wiring info for a bunch of mics.
Good Luck 73 Richard GM0GRD.
Get your radio's owner's manual for the pin assignments for the radio's microphone connector!!
The Asatic 877L microphone cable has four conductors:
RED, BLACK, GREEN, WHITE plus an uninsulated shield wire.
Astatic was one USA manufacturer (Shure, EV, and Turner were the others)
that tried to stay consistent in the usage/wire color on microphone cabling.
MIC Audio (+): WHITE
MIC Audio (GND): SHIELD
PTT (+): RED sometimes referred to as TX line
PTT (-): BLACK
GREEN wire? Likely not needed in your wiring
RX wire, used in some applications to prevent feedback -- mute speakers
IF the microphone is a USED purchase from eBay or a hamfest --
DOUBLE CHECK the wiring (in case of undocumented mods)
using the continuity function of your VOM/DVM.
Last edited by W9GB; 09-19-2009 at 07:05 PM.
Pin 8 is mic
Originally Posted by KC9NGH
Pin 7 is ground
Pin 6 is ptt
Most Astatics are wired as some have already mentioned
White is usually mic
shield is ground
red is usually ptt
black is sometimes used as a receive wire, but could be the other half of the relay in the mic