Highfields Amateur Radio Club
Constructors Corner.

Vertex Standard / Yaesu Microphone Pin Outs.
For: FT-7, FT-101, FT-201, FT-220, FT-221, FT-223, FT-225, FT-227R,
FT-277, FT-301, FT-625, FT-901, FT-902.

4 Pin locking ring	Pin	Signal
	1	Common Ground
	2	Mic Audio
	3	PTT (connect to pin 1 for TX)
	4	No Connection (some radios is Common Ground)