I have flown my Phantom enough to know that at around 600-700 feet, I lose FPV, and the annoying "signal lost" flashes on my iPhone. I freak out, move around where I'm standing, and sometimes even walk towards it just so I can gain control of what its seeing. What bothers me.. is when I see other people get well over 2,000 feet before losing signal. What am I doing wrong? Just to get these questions out of the way, I have great line of sight. As in, I can practically see the phantom with binoculars, no trees, few power lines, but not that close. I shot it off a hill, and flew it to a river that was in a valley type of layout. It went over, then down. I have LOS the entire time and still lose signal 600-700 feet away. Only about 100-200 feet high. Also, I even point the range extender at it.. still no improvement. I've seen the iPhone app that 'boosts' the signal, but there's all kinds of negative reviews saying it decreased range. What upsets me even more, is that when it did work for the select few.. they said they had 1,500-2,000 feet BEFORE the app, and now they have another 500 feet of range. So what am I doing wrong?!