Thanks. mike
I got the units to transmit (PTT) and send mic audio over the air. Now the recieve audio is non-existant.
I do have the HM-151. The audio is passing and the PTT is now working, But the mic is not passing the buttons.
To get the mic and PTT working I (my original problem) I removed one of the dip switches and discovered that a pin bent on insertion.
I also modified the jumper settings so that SPKR OUT is jumped. I had hoped that would pass the audio back to the control box but, so far, no go.
Any hints about the recieve audio you could pass along or should I start a new thread for that?
Thanks, again, for your help!
73, Mike