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Vertex Standard / Yaesu Microphone Pin Outs.
For: FT-720R.

This is a totally non standard plug / socket. I have been unable to find any more about this than the Yaesu part number: FD10PS-6M. Any assistance would be most welcome.

Never ground pin 5 as damage to the regulator will occur.

6 Pin undefined Pin Signal
connector 1Mic Audio
(connect to pin 5 for Up)
(connect to pin 4 for TX)
4Common Ground
(connect to pin 5 for Down)

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