hello, after a compass error, and went off to one side to 30 cm until it fell to the ground face up, before the flight arrived at 1.2km and just after the fall of 30cm and only gets 300m, I have put argtek ... and nothing 300m, I have done nothing downgrade. I put the new internal antennas and follows 300m, I changed to fcc and now I've got 500m but before this fall and came to 1.2km. the video image right. the problem is the scope of the rc. which may have broken? or that could have happened? Thank you. I feel much the translation.