OK, only a newby to fpv, done a quick search on here but not come up with anything. I've just bought the parts for FPV and fitted them to my Phantom 2 with zenmuse 3d gimbal and gopro hero 4 black. I've not even flown with it fitted yet but obviously checked out a few things whilst on the bench. I've bought a black pearl 32 channel diversity monitor (couldn't find any one in England selling the 7 channel near where I live) , an iosd mini, and an Immersion 5.8 long range transmitter. The monitor is great, I can hook it up to my computer through the HDMI input and the picture is very sharp at 1024x600. My question is, although the picture is good from the Phantom; it only connects at 480px. It seems I wasted my money getting a higher res monitor if that the max it's going to connect at, the gopro is set to record at 4K but I believe it only outputs through the usb port at 1080p. Is there a weak point in the system that's dropping the resolution down? If I set it to PAL I get a slightly better resolution; about 575px I think; but then the gopro will only record at 25fps instead of the 30fps I get on ntsc. What determines what the resolution is limited to, the camera, the transmitter, the receiver, or is the iosd mini maybe doing something? I realise this isn't a digital signal as such so maybe I shouldn't be thinking in terms of pixels per inch but I would still like to know if I can get a better resolution out of the set up I have? Or is that the best I will get.