many years ago... it's very quiet. A controller gets an initial call on UHF from a Nimrod requesting radar service...
but before he can answer gets another call from the same callsign, different voice, on VHF asking the same thing...
brilliant quick thinking, controller turns off VHF and gives a turn for ident to the left. The quickly switches UHF off and VHF on, and gives an ident turn to the right!!!
Radar return seen to fly straight ahead for 4-5 miles then third voice comes over the air... "Nice one, you got us there!"