Here is a handy kit that adds up to 1080p60 wireless video transmission to your camera rig. The Hollyland Mars 300 HDMI set has a line-of-sight transmission up to 300′. It comes with 4 x 2.4″ units and has a 1/4″-20 threat. Both the transmitter and receiver accept 6-16VDC input.
The receiver has two HDMI outputs, so multiple people can monitor the video without additional wires. The units have metal housings and ship with 5 antennas.