ALINCO
model(s)	function	connection
A-2507	mic audio	Black
	Ground	Black and Shield
	transmit	Red
	receive	speaker
model(s)	function	pin number
A-2530	mic audio	1
	Ground	2
	transmit	3
	receive	n/c
model(s)	function	connection
A-2533	mic audio	Audio
	Ground	ground
	transmit	control
	receive	speaker
model(s)	function	pin number
A-2564	mic audio	4
A-2568	Ground	3
	transmit	2
	receive	n/c
model(s)	function	pin number
A-2569	mic audio	audio
	Ground	ground
	transmit	control
	receive	speaker
model(s)	function	pin number
KN-2500	mic audio	3
KN-2550	Ground	4
KN-2580	transmit	1
KN-2585	receive	5
model(s)	function	pin number
KN-2526	mic audio	1
KN-2565	Ground	2
KN-2567	transmit	3
	receive	n/c
model(s)	function	pin number
KN-2560	mic audio	1
	Ground	4
	transmit	2
	receive	n/c