The Phantom FC40s have transmitters that work in Tradition, D-Bus and PPM protocols, with D-Bus being the one it uses. Do Phantom 1 transmitters also have these 3 choices? And what protocol(s) do Flamewheel 550s use? The reason I ask is that a guy I know built a 550 kit. His transmitter does not have a single switch to choose between GPS and ATT modes, so he is unable to do a compass calibration. I thought that if he could bind his Phantom 1 transmitter to it, he could get his compass calibration done. Thanks.