Finally the weather decided to give me a chance to fly, so this afternoon I skipped the gym & went flying instead. After upgrading the GPS receiver plate (?), I was eager to see if it made much of a difference - it has! I was averaging 8 satellites, so that gave me the confidence to push a little bit. I ran through three battery packs and tested my own bravery horizontally and vertically, taking my phantom well beyond normal visual range (800ft was as far as I dared) & switching to the FPV view on my phone to get an idea of what was going on. A few times I lost the video feed, most of the time it came back fairly quickly, but I will admit I got a bit jittery & invoked RTH on S1. On my second pack I thought I'd have a go at some altitude work, since everything was going so well. I have no idea how high I'd gotten but the phantom was a mere speck - and it was at this point that I saw 'control signal lost' on the app; Squeaky bum time. I was pretty chuffed when I heard the buzz of the props again as it came back towards me, and I took control back for a gentle descent. Then I got bored with the gentle descent & sent it into a spiral... I'm paranoid about VRS. My final pack was spent in ATTI mode practicing banked turns, speed runs, hand catches & just mucking about. It was great fun. I just hope it lasts Concentration!