![broadcast, radio, cigar box detector device, early selfmade radio, Germany, 1923, 1924, 1920s, 20s, 20th century, historic, historical, detectors, radio set, radio, radio sets, radios, headphone, headphones, home electronics, consumer electronics ... broadcast, radio, cigar box detector device, early selfmade radio, Germany, 1923, 1924, 1920s, 20s, 20th century, historic, historical, detectors, radio set, radio, radio sets, radios, headphone, headphones, home electronics, consumer electronics ...](https://c8.alamy.com/comp/BXKYX4/broadcast-radio-cigar-box-detector-device-early-selfmade-radio-germany-BXKYX4.jpg)
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![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
![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)
1923 radio broadcast from the studio of 2LO radio station, celebrating the first official birthday of radio broadcasting. Two Stock Photo - Alamy
![1923 Ad Moon Radio Long Island Communication Music Montreal Quebec SCA – Period Paper Historic Art LLC 1923 Ad Moon Radio Long Island Communication Music Montreal Quebec SCA – Period Paper Historic Art LLC](https://www.periodpaper.com/cdn/shop/products/SCA3_439.jpg?v=1571709186)