YAESU
model(s)	wire color	pin number
FT-101B	Audio	2
FT-101E	Ground	1
FT-301D	N/C	n/c
FT-901	Common	1
FT-7B	PTT	3
FT-225R/RD	receive	N/C
model(s)	wire color	connection
FT-401B	Audio	ring
	Ground	sleeve
	N/C	n/c
	Common	sleeve
	PTT	tip
	receive	n/c
model(s)	wire color	pin number
FT-720R	Audio	1
	Ground	4
	N/C	n/c
	Common	4
	PTT	3
	receive	n/c
model(s)	wire color	pin number
CPU-2500R	Audio	6
	Ground	5
	N/C	n/c
	Common	5
	PTT	4
	receive	n/c
model(s)	wire color	pin number
FT-2 Auto	Audio	2
	Ground	1
	N/C	n/c
	Common	1
	PTT	3
	receive	4
model(s)	wire color	pin number
most 8 pin models	Audio	8
	Ground	7
	N/C	n/c
	Common	7
	PTT	6
	receive	n/c