Highfields Amateur Radio Club
Constructors Corner.
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copyright date

Alan / Midland Microphone Pin Outs.
For: 13-861.

The original microphone had a transformer inside and used the same element as the speaker and miccrophone, switching the transformer in and out of circuit with the PTT switch.

5 Pin locking ring Pin Signal
connector 1Mic Audio
2Common Ground
3RX (connect to Pin 2 for RX)
4PTT (connect to Pin 2 for TX)

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