I setup a GMRS repeater using a pair of Motorola M1225 Radius radios. I wanted to use the ID-O-Matic IV controller, but I ran into a problem. The Id-o-Matic would send the CW identification, but the receive radio would not key the transmitter.
I learned the solution was to program the M1225 for "COR Active Low."
This was easier said than done. Nowhere in the Motorola software did I see an obvious place to program COR Active Low.
A little trial and error revealed the solution.
In the Motorola software, go to External Accessories.
Program PIN 8 as "CSQ Detect," "Output" and "Low", as shown in the image below.
Now your receive radio will signal your ID-O-Matic to key your transmitting radio.
Reference:
Manual for ID-O-Matic
I learned the solution was to program the M1225 for "COR Active Low."
This was easier said than done. Nowhere in the Motorola software did I see an obvious place to program COR Active Low.
A little trial and error revealed the solution.
In the Motorola software, go to External Accessories.
Program PIN 8 as "CSQ Detect," "Output" and "Low", as shown in the image below.
 |
| Program PIN 8 like this to achieve COR Active Low |
Reference:
Manual for ID-O-Matic
6 comments:
Do both radios need to be core active or just the receive?
Just the receive radio.
This advice is described here: http://www.hamgadgets.com/Motorola-repeater-interface-cables
I think it would be ok to do both radios though, as long as you're all setup. Maybe later you want to swap them for some reason.
The cable that I have is duplex, so my fear is that if both radios where core active it might cause a loop.
This setup is just for an emergency field radio. I already have the same setup with the ID O matic as a GMRS repeater, and I cant remember if I jut have the receive or both setup.
Thanks for the input.
Awesome! Thanks for sharing how to achieve this! Greatly appreciated! 73'
hello. i need the 1225 software for a repeater i need to change freqs on. any help is appreciated. n8oxa
Sorry I failed to see this post. I hope you found what you needed. I don't know if I still have that 1225 software. It was so long ago. I think I found it in an old forum.
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