this post was submitted on 07 Aug 2023
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GenZedong
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By my understanding, the materials were (and are) so inexpensive that building radios was actually a fairly popular hobby back then. An AM radio with decent reception is pretty simple to make.
You can build your own AM radio in less then an hour with a large metallic object (car, bike, large piece of scrap metal, basketball pole), some aluminum foil, a small piece of copper, a battery, and any sort of speaker.
It’s a pretty common childhood science experiment where I am to build functional jerryrigged radio.
But you are right, building functional AM radios was and is pretty common for how cheap the components are. Plus I’m pretty sure I can still go to a store and buy a small working radio for less then 20 bucks.