Telemetry radio on quad not connecting to ground station radio

[rc89]

I’m having a similar issue here, mine don’t find each other either. Never got to the bottom of it.

Telemetry Radios not finding each other

Hi, I’ve got a set of telemetry radios that won’t speak to each other, I know they used to work a few years back but at some point they stopped talking (probably me messing with settings) and I put them aside but I now want to use them again. I can connect to them both in Mission planner, one over USB, one over FTDI, the settings are identical and I’ve restored to default but they still don’t seem to talk, both just blink green (or the air one blinks red and green when on the pixhawk which I thi…