Innability to Turn on Transmitter

We are having trouble calibrating our radio since its popping up an error saying our transmitter isn’t turned on. We’ve checked the parameters for Serial 2 protocols but it is not showing up when we search for it. It popped up for a minute, we restarted the program and it didn’t show up again. If you got any suggestions, we will take them. Thanks.

We can not help you without any specifics.

  1. What transmitter and receiver?
  2. How is it connected?
  3. Is there a companion computer involved?
  4. What Flight Controller do you use ?