I would imagine if you want a camera op then he/she would need to have their own Tx/Rx so as to be able to operate the gimbal independent of the aircraft. They should have FPV also so that they can see what they are photographing. That is the set-up that I use. I have a 9ch Tx for my aircraft and a 8ch Tx for the gimbal. I use the 8ch Tx because it is comparable with my FPV head tracking. I use 2.4 ghz for the aircraft and gimbal and 5.8 ghz for the FPV.