GA General Aviation Two Plug Wiring Data
5.2mm Plug (available here)
Mic -
Common Ground for Mic.
Mic +
Carbon Replacement Mic Levels.
PTT
Grounding to Mic Gnd will cause the radio to transmit.
6.35mm Plug
Spk+
Speaker Out and Side Tone
Spk Gnd
Speaker Ground (not necessarily commoned with Mic Gnd)
NC
Not Connected
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