I flew my PV2+ to 720' AGL, pretty much straight up, when I suddenly lost communication. Thank God for the "coming home" notification and safe return of my Phantom. I could hear it very faintly, but couldn't see it when it started home. I have two questions: 1) 720' is just over 219 meters. Far short of the 800 meter range claim. I had no power lines around and direct line of sight. I was flying on a golf course in a remote area. I also didn't get a low battery alarm. RC is set to FCC. Firmware is up to date. 2) Once communication was lost, the video that was being shot got messed up and won't play on my computer. Info shows a 200+Mb Mp4 file, but that's it. The two clips that I shot before it were fine. Why is this? Has anyone else experienced these issues?