First Portable Superheterodyne Radio Receiver, Made by Edwin Howard Armstrong, 1923 - The Henry Ford
Radio receiver type Tf. no. 2326K. (c. 1923) | Science Museum Group Collection
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 geht der erste deutsche Radiosender an den Start | NDR.de - Geschichte - Chronologie
1923: Beginn des Rundfunks - Ried
Crosley 1923 Radio Model V PT1 - YouTube
WKAQ Puerto Rico radio station (1923) — Novak Archive
Die Geburtsstunde des Radios - Weimarer Republik | Zeitklicks
Vintage Tube Radio, ca. 1923, UK. The radio is missing t… | Drouot.com