@Arya
I'm no expert, but I always loose videofeed before controll, and RTH have never kicked in before I've lost controll. And I'm always able to switch the s2 button to manually RTH, even though I've lost video.
So I'm guessing 5.8Ghz.
@Andi HaK
I'm no expert, but I used telnet to verify output after setting new homepoint in DJI Go App and it still showed 27dbm (with FW 1.5.7 though).
Thanks for making this mod! Updated without problems (1.5.7) and used telnet to check signal strength afterwards. Just have to charge to test it!
One quick question: Is it possible that the radio/transmitter may overheat and get damaged because of the added power output?