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CDM Motorola CDM1250 Repeater home build

KE4OKD

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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)
 
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When I first glanced at the photo I thought you had RG-142 running into a gold plated connector of the side near the front, then realized it's the simulated branch in the carpet and the clasp.
Now rescue randy is wishing he had not signed up to take a class from a moron like me...
 

KE4OKD

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Also, on duplexers, it will have LOW, HIGH & ANT near the three connectors.

LOW= Low Pass Port. You will connect your transmitter to this port.

HIGH= High Pass Port. You will connect your receiver to this port

ANT= Antenna Port. Connect the feedline to this port.
Well, I ordered (quick ship) some interface cables while I await the ID-O-Matic arrival. I connected everything like I believe it should be however I have a failure to pass audio. The repeater keys up and there is a carrier wave but no audio out to the other HT I'm using to test the repeater with.
I am getting audio into the Rx (repeater) radio as I can hear it over the speaker in the radio - just nothing to the HT's except carrier wave and an MDF chirp tone I left on.
The attachment shows the accessory pin configuration I have for both radios. Maybe here?
Ideas? Anyone?
 

Attachments

  • Pin Configurations - Both Radios.pdf
    675.9 KB · Views: 13

KE4OKD

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I think that screen indicates pin 3 is looking for a logic signal, low or ground in this case, not an analog audio signal.
Any suggestion on how to correct this? Frankly, as easy as I imagined this to accomplish before getting into it, I find I'm a little over my head.
Gregg - gregg at wardlow.org
 

ramal121

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Audio in the Id-O-Matic is adjusted with the receive pot. Good starting point is about half way up.

Does your radio programming for Rx Audio Type and Ext PTT Audio Source look like this?

groob.JPG
 
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