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CDM Motorola CDM1250 Repeater home build

Thread starter KE4OKD
Start date Feb 27, 2025

KE4OKD

Member

Premium Subscriber

Today at 7:41 AM

I have one more BIG uncertainty. While the below information has been provided by the ID-O-Matic board provider, I'm just uncertain how to apply it..
The below naturally makes me think of the Accessory pins in the Radio Configuration tab however some of the referenced pins are not available in that tab, Pin # 2, 3, 7, 11 & 13.
So, when the controller arrives, I'm uncertain what to do with it. I believe this may be my final hurdle.
Anyone??

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)