At an altitude of around 200ft I'm losing signal to my controller. There are a couple of trees with no leaves around but I don't live in a forest by any means. I also lose signal when I go out maybe 4-5 backyards from mine which is no more than 200-250 ft away and once again the RTH is triggered. Ive tried with the stock antennas and also with the aftermarket alpha's. The alpha's are a little better but not much. Im not trying to fly cross town but I can barely make it off my block before I have a signal lose. So is this a normal in a city environment? Love to hear what you guys think...Thx