Even though I do not fly often in my back yard because of the trees.I do try it once in a while .I have a Phantom 2 and a Phantom Vision. With the p2 I can get 8 Sats within a minute. But the Vision never got more than 6. So I never lifted it off the ground. After reading about all of the Foil mods I decided to try it today on the vision.Used the self adhesive copper foil. Put the top shell back on took it out back and got 9-10 Sats within 1 minute. So now I am a believer.