am radio tower power

I'm surprised nobody mentioned radio communication. The AM (Amplitude Modulation) transmission is even quite simple to understand and build. You can even create an electric arc between the ground and the transmitting tower as a cheap (and dangerous) receiver: [this video]

I'm not entirely sure what process is converting to sound, but the metal fence makes a great antenna and we are talking about 10's of feet from the antenna with 500 kW AM at 200 kHz going into it. It could actually have been arcing: [this video]

Also you can hear AM radio transmission if you short the tower: [this video] Electricity is both awesome and terrifying

Fun link time: With enough power, literally anything can become an AM radio. No tuning or filtering is required. [this video] [link]

[this video] [link] Do not understand the explanation. Just put a space will get the hn act. And copy is just right click or touch-hold. Am I missing something ?

I grew up in a house that was next door to a radio rebroadcasting facility, and we could definitely hear the radio station coming from the walls of our house sometimes, e.g. even their station identification so there was no ambiguity. I assumed it was the house wiring (mostly knob and tube) acting as an antenna. I'm reasonably sure that was AM, though. Was the sound you heard like either of these? [this video] [link]

Slope conversion is the hard part, once it's AM just about any energy conversion will do. abs(x) and |x|^2 are plenty nonlinear. [this video]