SHAKESPEARE
model(s)	wire color	pin number
GBS-2500	Audio	1
GBS-1500	Ground	2
GBS-240	N/C	N/C
	Common	2
	PTT	4
	receive	3
model(s)	wire color	pin number
GBS-2000	Audio	1
	Ground	2
	N/C	N/C
	Common	2
	PTT	3
	receive	4
model(s)	wire color	pin number
740	Audio	1
	Ground	4
(Hi-Z, Use an amplified mic only)	N/C	N/C
	Common	3
	PTT	2
	receive	N/C
model(s)	wire color	pin number
840	Audio	4
	Ground	1
	N/C	n/c
	Common	1
	PTT	3
	receive	5