The TelJET telemetry system consists of two main parts - the 2.4 GHz telemetry transceiver that is mounted into the model and a ground receiver unit that receives and visualizes the transmitted data. Without requiring any kind of Laptop or PC the information could be read off on a graphical display. The system is easy to use.

Andvantages:
During startup phase no cable-wired ground unit has to be connected to the ecu, probably a problem of helicopters (spinning rotor).
During flight all important data, like end of fuel, speed or distance were directly transmitted to the pilot.