Long ago I was given an old, surplus 100+watt VHF FM transceiver, hand-held mike with a PTT button. It used tubes, had a metal box so heavy you could stand on i

Long ago I was given an old, surplus 100+watt VHF FM transceiver, hand-held mike with a PTT button. It used tubes, had a metal box so heavy you could stand on it. It was so big we put it on top of the apartment's refrigerator. The lady who lived upstairs in the building owned an electric organ. She usually played it during the day, but on weekends she'd sometimes fire it up to play long and loud ... long after our baby had gone to sleep. One day I noticed that keying the transmitter would cause the organ to make a sound like a pachyderm in agony. Turned out to be the solution to the loud weekend-concert baby-waking problem.