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Proving electromagnetic waves
Heinrich Rudolf Hertz proved that transmitted airborne electromagnetic waves in an experiment proving James Maxwell's theory of electromagnetism. -
First commercial telegraphy system
Italian inventor Guglielmo Marconi built the first complete, commercially successful wireless telegraphy system -
Sending a voice
Brazilian priest Roberto Landell de Moura transmitted the human voice wirelessly for a distance of approximately a half mile -
The First Radio Factory
Marconi opened the world's first purpose-built radio factory at New Street Works in Chelmsford, England. -
The first radio news program
The first radio news program was broadcast by station 8MK in Detroit, Michigan -
Contributions from radio operators
Single side band and frequency modulation were invented by amateur radio operators. By the end of the decade, they were established commercial modes. -
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Mobile Communications
AT&T commercialized the Mobile Telephone Service. From its start in St. Louis, AT&T then introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948. -
The pocket radio
Regency company introduced a pocket transistor radio, the TR-1, powered by a standard 22.5 V Battery. -
Color TV and Radio satellite
Color television was being broadcast commercially and the first radio communication satellite, Telstar, was launched. -
Radio navigation system
LORAN became the premier radio navigation system. -
The start of the GPS
U.S. Navy experimented with satellite navigation, resulting in the launch of the Global Positioning System. -
Radio change
U.S. Army and DARPA launched an aggressive, successful project to construct a software-defined radio that can be programmed to be virtually any radio by changing its software program. -
Popularity
"Survey of 3,000 Americans released by consultancy Bridge Ratings & Research" found that "[a]s much as 19% of U.S. consumers 12 and older listen to Web-based radio stations.
