Many years ago there was a model aeroplane flying club at the old Nutts Corner airfield near Belfast International. It was also on the visual approach route for our Puma and Wessex helicopters. There used to be a joker who would fly his model towards when we where approaching; not to hit us but just for fun; we think. Flicking the HF set to 27 megs and giving a 100mw blast would lock his controls up and you would watch it furiously gyrating towards the ground.
When you thought it had about 50 ft. to go you would give it back to him.
You can't do it now because they use different frequencies.