Yeah I lost signal at 500 feet. Now I was 500 feet vertically above me with very little horizontal distance. Also how do I go about getting those files to upload? I am a believer that most things can be equated to user error. So if I am doing something wrong I need to learn how to correct it.
Your small horizontal distance is probably the reason why you went out at only 500ft. Took my P4 for a Climb at a mountain in a remote island in Norway the other day. went 500 meters (1640ft) with full signal.