Relative newbie- have done lots of research though so im decently aware of the terminology. So I bought my drone (Phantom 2 Vision (not the vision PLUS)) used, from craigslist from a very nice old man that bought it and used it very little and very gently. I flew it around, and the farthest ive flown away is about 400 vertical feet right above me, and the wifi cut out. but when i fly away from me at a low altitude i can get farther than 400 feet. cant figure it out. Then, i was flying yesterday, and when i got above about 50 feet off the ground (maybe 100 feet away from me), the wifi disconnected, and wouldn't re connect until the drone until the drone was about 15 feet in front of my face. I thought it might have been a low battery on the wifi extender, but i fully charged it right before i went flying today. Same problem happened again. i got new antennas for it and tried those out, same results (linear plane antennas?? dont know what that means) What kind of extender should i be using, and whats the best antenna (im trying to get the best and most reliable range)? Can (or should) i replace the antenna(s) on the actual drone? What am i doing wrong and how can i fix this problem of disconnection? What can i do to improve connection after this problem is solved (or works itself out)? Also, when i do get connection, my video feed is very bad quality (looks VERY pixelated, sometimes i have to just guess what its showing, based on shapes of objects). How can i fix this? Anything will help, thanks so much for your time!!