Welcome the latest from FrSky the GRX6! Designed for gliders with a built in variometer sensor you can now receive telemetry on your radio. The FrSky GRX6 is a standalone receiver with all the functions of X6R. The GRX6 has a 9ms PWM output latency less than that of the original X6R in high speed mode. Add a backup receiver in case the first one fails with the supported redundancy function on the GRX6.