Motorola CDM1250 Repeater Setup

[Moto_Dan]

I know this topic has been beaten to death, but I still cant find the information I need. With that being said I have a question about using two Motorola CDM1250's to make a portable repeated. I have them set up with a cheep Ebay special RICK cable. I am getting kick back from it, but it does not seem to be passing audio. Once I get this working and see that it is possible, I plan on purchasing a duplexer and an actual Motorola repeater interface box. I am trying to used 155.160 as the RX channel and 159.735 as the TX (Yes they are licensed frequencies and yes I have the authority to be using them.) Thanks in advance all.

TX Settings
http://imageshack.com/a/img921/3684/CLGXSW.jpg
http://imageshack.com/a/img922/2715/TSF9p3.jpg

RX Settings
http://imageshack.com/a/img922/5985/sU7Emq.jpg
http://imageshack.com/a/img924/9068/YzyH2S.jpg

 

[Project25_MASTR]

How do you know you aren't passing audio?

 

[cmdrwill]

Did the external mic input on the TX radio get selected, enabled?

 

[Moto_Dan]

That seems to work, but only on CSQ not with a PL or DPL. Any thoughts?

 

[jim202]

You think it might help if you provided what pin connections your using to pass the TX audio, RX audio and how your connecting the signal controlling the PTT from the receiver to the transmitter?

Your not going to get much help without giving those that might want to help something to work with.

On another point here, the CDM doesn't have very good shielding or isolation from signals outside the radio. This alone will make them a poor choice for repeater use unless you crank the TX power way back.

 

[Moto_Dan]

I posted what I have to what pins in the above picture links.

 

[Project25_MASTR]

That tells us what's being used that's programmable, not the fixed pins though.

Is the amber monitor light on?


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