Is there a way to on purpose fly out of radio range (long photo mission)?
I did this with a home brew pic project I built about 12 years ago. What does the apm 2.5 do if you turn the radio TX off while it is flying a programmed GPS way point mission?
It depends on your radio and what it's prgrammed to do when it loses signal. Please see the manual for details.
I have Ch8 failsafe set to change the plane to RTL on loss of signal. That means that if I have an Auto mission that goes out of radio range the plane will RTL when it does. I guess I have to change the failsafe to Auto for that mission. I hadn't thought about that, but then again I haven't flown any Auto missions yet either.
If you select failsafe to just hold last valid position on all channels then it will just continue the mission.
I have often wondered how useful the RTL failsafe really is. If it’s far away on an AUTO mission and you can’t see what it’s doing and it goes to failsafe RTL it will start flying back home. Now when it gets back in radio isn’t it going to go back to flying AUTO mission, which will fly it out of range again and start the whole thing all over. Looks to me like it will get stuck in a loop until the battery goes dead. I guess that you could time the mission and if it is gone too long you could try going to manual RTL.
There really should be different failsafes for Auto modes and manual modes. I want my plane to RTL if I lose signal in FBW-A but continue if I turn my radio off in Auto.