Highfields Amateur Radio Club
Constructors Corner. smoking soldering iron
copyright date

Icom Microphone Pin Outs.
For: IC-FR3000, IC-FR4000, IC-FR4100.

Important:
Never ground pin 1 or damage to the regulator will occur.

8 pin Modular Pin Signal
connector 1+9v DC 10mA MAX
2I/O port for PC programming
3No Connection
4M PTT (input port for TX control)
5Mic Ground
6Mic Audio
7Ground
8M MONI (input port for monitor control)

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