I'm running a p2 with gimbal and Gopro3with AVL58 transmitter. I originally installed the transmitter underneath pointing out the back, great video going away but coming back not so good. I them rearranged the transmitter to come out the side underneath and was getting like 600-700 meters of great video. At the suggestion of the quad guy at the local hobby shop I mounted my transmitter in the top of my skid. Took it out today and was getting 1100 meters of clear video. I was very pleased with the outcome.