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Vertex Standard / Yaesu Microphone Pin Outs.
For: FT-90, FT-100D (1990s), FT-2600, FT-3000, FT-7100,
FT-8100.

Important:
Never ground pin 4 or damage to the regulator will occur.

NOTE:

6 Pin modular Pin Signal
connector 1SW1 (multi function switching)
2Mic Audio
3Common Ground
4+9v
5(see note)
6SW2 (multi function switching)

Schematic of MH36 (the supplied Mic) for SW1 and SW2 functions:


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