That reminds me of a story.
As mentioned before, my dad was an electo-mechanical whiz kid and serial entrepreneur. By the time he was in his late teens c. 1930, one of his businesses was a radio shop. He was also a big-time prankster, so he built a big jamming device that blocked reception for pretty much the whole small town. Since this was the golden age of radio, I'm pretty sure the townspeople didn't think that was funny.
