RC Cross Country Soaring

Winch launching and flying a large scale model radio control glider equipped with an audio variometer (sensitive rate of climb instrument,) that transmits tones to a receiver on the ground. High pitched tone for rising air, low pitched tone for sinking air.

[@wordreet]

Cross country? Isn't that just when your plane begins to decide for itself what it's going to do and you have to chase it? Mine sometimes does that! ;¬)

[@cloudstreets1396]

Looks like wurts