I just purchased the phantom f4 about a weak ago. At first I was having a problem nothing worked when I plugged the battery in. I had throttle down and trim all the way down. But I figured out the problem, the manufacter had wires plugged in wrong. I switched them and now everything is ok. I waited about a week before I took her out because of bad weather. But today when I took it out and was doing a signal check I could only get about 20 feet before it would start loosing signal.(so I didn't fly her Sad) Do i have a bad radio/receiver? I have the antenna coming to the back then I have it go up the vertical stab.

Please can you guys help me out? I want to fly it!