Amazing.
Interesting antenna system,
I still remember my brother flying his RC model back in the forties. Rudder-only, controlled only by single radio pulses to a wind-up escapement mechanism* connected to the rudder. One pulse right, next pulse back to neutral, next pulse left, next pulse back to neutral. So to make a left turn, you had to give it three quick pulses, where it would waggle to the right, then back to straight flight, then finally turn left. One more pulse and it would go straight again.
Landing was only possible when it ran out of fuel. I remember seeing it rock back and forth slightly as the engine sputtered to a halt.
Egad!
Terry, 230RN
* The "wind-up escapement mechanism" was powered by a rubber band, which you would wind up just like you would a rubber-band powered prop model, except the rubber band was not connected to a prop, but rather to the rudder escapement.
