A trainer cable to enable buddy boxing.

Allows you to connect two radios together enabling the flight instructor take control of the students aircraft when necessary.

On FrSky radios this plugs into the "DSC" port, something all FrSky radios have offered.

Note- Did you know that a cable like this can be used in most modern radios, and they do not need to be the same brand? For example we can use a FrSky radio as the instructors radio, and a student can use a Spektrum. FrSky radios have special abilities to calibrate to other brands and makes the training setups much nicer.