This $200 radio replaces your RC receiver and connects to your RC transmitter. Using the UHF band and higher power than regular RC gear, it's supposed to extend your range to miles. Mostly intended for FPV flying, but has clear application for UAV use, too.
The manual explains how it works:
Basically, any 4-15 channel radio can work with this system, you just need to find
the PPM signal from the radio.
We can get the PPM signal from the trainer ports for Futaba （ Non-JR ） series
radios. Because the trainer port of JR just output 4-chans PPM signal, so we need to
find the PPM o utput from other places, normally we can get the PPM signal from the
pins of the RF connector
You can get all the definitions of the trainer port for most of the popular radios
For the radios which have removable RF modules, we can get the PPM signal
from the pin of the RF connector
Available now from BevRC.