Icom LMR 2 Pin Wiring Data
Wildtalk Earpieces with this plug end with the part number -IS
This wiring plan is for Icom Land Based radios, non submersible models only. It does not apply to other Icom radios.
Common Ground for Mic.
Mic & PTT
Electret Mics only connected here. When Mic is connected via PTT to Ground the radio transmits. (Mic and PTT are in series).
5Volts via a 470R resistor is available here (on some radios.)
Speaker Ground (not necessarily commoned with Mic Gnd)
Porgramming wire for programming the radio.
Most Icom LMR (Land Mobile radios).
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