I have the identical problem as noted in this thread with the exception that my antenna mod worked great when first installed. I believe my problem started when I may have failed to completely screw the antenna cables back onto the RC after removing the antenna to get the RC in my travel case. I believe I may have inadvertently operated the RC without one of the cables fully seated.....and according to some of the pro's on our forum, this could toast the transmitter. My antenna came with a warning not to power on the RC without the antenna installed. Although the RC will still operate my P3A at ranges of about 2000 feet LOS, it is no nowhere close to the 3+mile range I was easily getting before. I plan on reinstalling the mod on another RC I have acquired.
Sent from my iPad using PhantomPilots mobile app
After reading about what could happen about the powering up damage I became very attentive to make sure I didn't do this. That would be a real bummer to say the least.