Helped Darin with his node 27074 today. While we were talking I could hear a burst of squelch on the end of most every one of his transmissions. He would run the squelch adjustment and the first time afterward it would be fine but every transmission after ended with a squelch burst.

The fix for this is to change rxctcssrelax from 1 to 0. Once you do that and restart asterisk, you’re good to go.

Darin’s configuration is using a DMK URI to connect to a Motorola GM300 using simplex. His COR and CTCSS are derived from USB. I have experienced similar results with a fob based interface on a GE MLS2 radio.