Stornos
The spring clip on the Storno mike, , when pulled out a bit and released on transmit produced a most satisfying "BOINGGGGGGGGGGG!!!" sound across the net. Watching all those at an 'O' group simultaneously grabbing their chests added to the fun.
The most surrealistic Storno episode in my experience was on a Harrier deployment in RAFG in the mid 70's, when due to a freak sky wave we had about 20 minutes sharing frequency with New York taxicabs.
New words were learned on both sides of the Atlantic that day.