![Goltone crystal radio by Goldstone (~1923): Like modern passive RFID chips, crystal radios a hundred years ago didn't need their own power-supply. There was enough energy in the transmitted radio signal to Goltone crystal radio by Goldstone (~1923): Like modern passive RFID chips, crystal radios a hundred years ago didn't need their own power-supply. There was enough energy in the transmitted radio signal to](https://i.redd.it/ozszki78j6ga1.png)
Goltone crystal radio by Goldstone (~1923): Like modern passive RFID chips, crystal radios a hundred years ago didn't need their own power-supply. There was enough energy in the transmitted radio signal to
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![First Portable Superheterodyne Radio Receiver, Made by Edwin Howard Armstrong, 1923 - The Henry Ford First Portable Superheterodyne Radio Receiver, Made by Edwin Howard Armstrong, 1923 - The Henry Ford](https://thfemu.s3.amazonaws.com/CollectionImages/_social/photos/thf156549.jpg)
First Portable Superheterodyne Radio Receiver, Made by Edwin Howard Armstrong, 1923 - The Henry Ford
![1923 radio broadcast from the studio of 2LO radio station, celebrating the first official birthday of radio broadcasting. Two Stock Photo - Alamy 1923 radio broadcast from the studio of 2LO radio station, celebrating the first official birthday of radio broadcasting. Two Stock Photo - Alamy](https://c8.alamy.com/comp/HHW2MY/1923-radio-broadcast-from-the-studio-of-2lo-radio-station-celebrating-HHW2MY.jpg)