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
