Larry,
?
I'm trying to build a GMRS repeater using CDM1250 radios, ID-O-Matic IV and one of the inexpensive six bay duplexers. While I'm waiting for the ID-O-Matic delivery, delayed for weather, I quick-shipped an interface cable to me and connected everything. I believe the radios are 'repeating' and I hear audio in the Rx CDM radio when I key-up/use one of the HT's I'm testing the system with BUT I don't get any audio out of the HT's. It seems like I'm getting some COR with the HT's - but no audio/voice. I'm stumped.?
One more thing I just don't understand is the below.?
In red is says 'programmed for pin-8 COR'. Where is pin-8? Is this something I modify in the CPS?
- With two 16 pin rear accessory connectors wired to the controller (one for TX radio, one for RX radio) for plug and play to make an instant repeater from any two compatible Motorola radios (Any Motorola radios with 16 or 20 pin rear accy connector, programmed for pin-8 COR active low (or high changed in programming). For CDM radios, use center 16 pins.
- WITH VOICE AUDIO IDer board wired to and tested with above.
?
How about the below? I don't 'get' what or where these pins are and how to modify them if needed and unfortunately, I don't have anyone to help me with this. I hope you, or someone on the thread, can & will help me muddle through this. When I 'get it' and I'm sure I understand it all, I will create a .pdf guide with pictures and explanations to help the next person who attempts it. I'm freshly retired, have a lot of time to do these things now and this is one I had 'shelved' for when I had the time..? Thanks in advance. gregg at wardlow.org
Gregg N4RGW - WQLY786
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)
Gregg