I'm experiencing strange behavior with my Phantom 3. I'm currently located in a gated community in Ecuador and while I'm able to do 5km range with my Phantom 3 without any problem, I'm still unable to maintain a connection while flying over the site that is 1.5km long by 700 m wide. At first I was blaming the 2.4 Ghz Internet transmission tower that is providing Wi-Fi Internet to all the houses on the project but an event puts that theory to trash last night. We where experiencing a total power outage so no power, no client's wifi and no Wi-Fi distribution over the site. I then grab the occasion to test my theory and take my P3 out for a fly. I then reallized that the situation wasn't better at all. I was unable to get a steady RC signal over the site but as as soon that I was crossing an imaginary line around the site, then the signal gets back to 100% and I was able to do the 5km range without any signal drop. I'm out of solutions now and I must be able to fly this thing around because I got a contract with owners to map their site and do some promo shot of their installations but I'm still struggeling with this issue instead of beeing doing my job. I've made a DIY windsurfer antenna mod and while that helps a little, I'm still unable to get what I'm supposed to get as signal stability. Anyone ever had such issue ? Any idea ?