I had my first flight with my P3P away from all interference and trees this weekend and still started loosing signal at about 2000 feet or 650 meters. I had a clean line of sight to the bird and still didn't get a range much further than what I can get in town surrounded by homes and business blasting out wifi. I have an Acer tablet on airplane mode and GPS off. The controller was fully charged. I had the antenna parallel and pointed as close to 90 degrees from the bird as I could. What could I be doing wrong? Is it possible some P3P's are defective in some way where their range is seriously limited?