Hi, still fairly new to phantoms but just wondering a bit on the "range extender". My friend has the phantom 2 vision and he has a white range extender on the end of his transmitter and he has the feature of connecting his iphone wireless to use as fpv and data on screen. I recently got a phantom 2 with gopro and h3-3d setup. Will be setting up the fpv soon. Just wanting to clear up does the white range extender extend the fpv on his or is it extending the control circuit as it would be? He doesnt know whats its extending either. Also what sort of range would i have height wise and distance with a fully standard transmitter/receiver on the phantom 2? Just want to know what sort of limits i have? Cheers