ICOM
model(s)	wire color	pin number
ic-280	Audio	1
	Ground	4
	N/C	n/c
	Common	4
	PTT	2
	receive	n/c
model(s)	wire color	pin number
most 8 pin radios	Audio	1
	Ground	7
	N/C	n/c
	Common	6
	PTT	5
	receive	n/c