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Heinrich Rudolf Hertz was able to prove transmitted airborne electromagnetic waves, which confirmed James Clerk Maxwell's theory of electromagnetism.
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Italian Inventor Guglielmo Marconi was able to build the first complete, commercially, and successful wireless telegraphy system based on airborne Hertzian waves.
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Brazilian priest Roberto Landell de Moura transmitted the human voice wirelessly for a distance of a half a mile.
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Marconi opened the worlds first purpose-built radio factory in Chelmsford, England
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The first radio news program was broadcasted August 31, 1920 by station 8MK in Detroit, Michigan, which survives today as all-news format station WWJ under ownership of CBS Network.
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In the early 1930s, single sidebanded and frequency modulation were invented by amateur radio operators.
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Commercial televisions transmissions started in North American and Europe.
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in 1955, the new Sony company introduced its first transistorized radio, which was small enough to fit in a vest pocket, powered by a small batery.
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In 1963, color television was being broadcasted commercially, and the first radio communication satallite, Telstar, was launched.
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The Advanced Mobile Phone System analog, developed by Bell Labs, was introduced to the Americas in 1978.
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The U.S. Navy expirmented with satellite navigation, culminating in the launch of the Global Positioning System (GPS) constellation in 1987.
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In 1995, Scott Bourne founded Net Radio.com as the worlds first internet-only radio network.
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In January 2009, the U.S. Copyright Royalty Board announced that "It will apply royalties to streaming net services based on renevue.",since then websites like Pandora Radio, Mog, 8Tracks, and even recently Google Music have changed the way people discover and listen to music.
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On January 31, 2016, webcasters who are governed by rules by the Copyright Royalty Board were required to pay to Sound Exchange, an annual, nonrefundable minnimum fee of $500 for each channel and station.
