Nikon Z7 & Z6 | 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 Nikon Z7 or Z6 via USB connection. 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. 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. SBUS is then connected to the Entire, where is converted to the commands for your Nikon Z7 or Nikon Z6 camera. This option is slightly less comfort for user, but offers full control range of the LightBridge2.
The basic scheme is in the next picture.