Pretty cool stuff. A buddy of mine had something similar in his Bandit but unfortunately lost the aircraft due to a battery power issue to the receiver (nothing to do with airspeed and nothing to be done to save it once it happened). But it was really cool to see and hear the telemetry in action. I've been thinking something like this would be as much fun to play with as useful - It's a black art guessing precise airspeed based on body angle and sink rate, I'd love to have that extra bit of information.