BMPCC 6k (4k) | Long-Range remote control for M600 drone

The most universal solution is based on AIR Commander Entire as camera remote controller and AIR Commander Link v2 as a long-range wireless link. AIR Commander Link v2 will just transfer your commands from the place where you or your camera operator stands and remote location (drone, crane, cable cam or etc.). AIR Commander Link v2 Receiver just accepts these commands and forward them to the Entire, which will execute them on your Blackmagicdesign Pocket Cinema Camera 4k or new 6k version. Interconnection between AIR Commander Link v2 Receiver and the Entire is very simple, just one cable which includes also power for the Receiver. Interconnection cable is included in the basic package of the Entire. BlueTooth control is done via external USB dongle, available here. Basic operation scheme you can see in the next picture.

You can also use DJI Lightbridge 2 wireless link from your DJI M600 drone as a control channel. For this solution, you will need DJI Expansion Kit for your DJI Transmitter. This kit enables you to transmit custom commands via Lightbridge to F-Ports of your drone. Because DJI A3 F-ports are only PWM you need to mix them up by PWM->SBUS converter. The basic scheme is in the next picture.
This option is slightly less comfort for user, but offers full control range of the LightBridge2.