Motorola 16 or 20 pin interface cables

16 pin rear accessory cables to make an instant Plug-and-Play repeater from two *compatible Motorola radios with 16 or 20 pin rear accessory connectors.

You MUST program rear accy connector pin 8 of the receiver radio for PL/DPL COR active low (or high but must reprograqm IDOM4 to match COR active state)

* Compatible radios,
Motorola GM300, CDM750, CDM1250, CDM1550, M1225, Radius, (Maxtrac w/16 pin accy conn), SM120, SM50, M10, M120
On 20 pin radios, plug into CENTER 16 pins)

Or any Motorola radios using 16 or 20 pin rear accy connector pins
TX radio pins:
Pin 2 Mic Hi (audio in) (WHITE to pin 11 IDOM4)
Pin 3 PTT active low (GREEN to pin 3 IDOM4)
Pin 7 Ground (BLACK to pin 1 or 12 IDOM4)

RX radio pins:
Pin 7 Ground (BLACK to pin 1 or 12 IDOM4)
Pin 8 COR (active low is default for IDOM4) (BLUE to pin 7 IDOM4)
Pin 11 discriminator audio out (YELLOW to pin 8 IDOM4)
Pin 13 +12 vdc (this is where IDOM4 gets its power) (RED to pin 2 IDOM4)

PIICTURES SHOW CONNECTION TO IDOM4 SOLD SEPARATELY

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