![broadcast, radio sets, radio set Olympia Reflex, made by Sachsenwerk Dresden-Niedersedlitz, Germany, circa 1937/1938 Stock Photo - Alamy broadcast, radio sets, radio set Olympia Reflex, made by Sachsenwerk Dresden-Niedersedlitz, Germany, circa 1937/1938 Stock Photo - Alamy](https://c8.alamy.com/comp/BBN9E3/broadcast-radio-sets-radio-set-olympia-reflex-made-by-sachsenwerk-BBN9E3.jpg)
broadcast, radio sets, radio set Olympia Reflex, made by Sachsenwerk Dresden-Niedersedlitz, Germany, circa 1937/1938 Stock Photo - Alamy
![Transmitter of Guglielmo Marconi with which he made his first radio experiments. The wire winding on the wooden frame is the coil, the glass bottle, a so-called "Leyden Jar" the capacitor Stock Transmitter of Guglielmo Marconi with which he made his first radio experiments. The wire winding on the wooden frame is the coil, the glass bottle, a so-called "Leyden Jar" the capacitor Stock](https://c8.alamy.com/comp/TA2916/transmitter-of-guglielmo-marconi-with-which-he-made-his-first-radio-experiments-the-wire-winding-on-the-wooden-frame-is-the-coil-the-glass-bottle-a-so-called-leyden-jar-the-capacitor-TA2916.jpg)
Transmitter of Guglielmo Marconi with which he made his first radio experiments. The wire winding on the wooden frame is the coil, the glass bottle, a so-called "Leyden Jar" the capacitor Stock
![broadcast, radio, radio sets, self-made radio set, Germany, 1929, Additional-Rights-Clearance-Info-Not-Available Stock Photo - Alamy broadcast, radio, radio sets, self-made radio set, Germany, 1929, Additional-Rights-Clearance-Info-Not-Available Stock Photo - Alamy](https://c8.alamy.com/comp/RYJ9R2/broadcast-radio-radio-sets-self-made-radio-set-germany-1929-additional-rights-clearance-info-not-available-RYJ9R2.jpg)