In 1879 Heinrich Hertz invented the first radio transmitter that used sparks to generate electromagnetic waves. Today this… | Toilet paper holder, Spark, Inventions
The First Radio Transmitter Station. Milan. 1907. News Photo - Getty Images
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history - When was the first radio transceiver (transmitter/receiver) built, and by whom? - Amateur Radio Stack Exchange
File:Meissner radiotelephone transmitter.jpg - Wikimedia Commons
Transmitter - Wikipedia
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Transmitter - Wikipedia
Photo shows the transmitter and studio of the first radio broadcasting station in Minnesota, which broadcast market and weather reports and musical programs using the call letters 9XI, Minneapolis, MN, 1920. (Photo
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the first radio transmitter station, milan, 1907, Stock Photo, Picture And Rights Managed Image. Pic. MAR-W664893 | agefotostock
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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
