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1880
David Edward Hughes performed the first intentional transmission of a signal by means of electromagnetic waves. -
1890
Italian inventor, Guglielmo Marconi, builds the first wireless telegraphy system based on airborne Hertzian waves. -
1900
Brazilian priest, Roberto Landell de Moura transmits the human voice wirelessly for a distance approximately a half a mile. -
1910
Guglielmo Marconi opens the worlds first purpose-built radio factory at New Street Works in Chelmsford, England. -
1920
The first radio news program was broadcasted by 8mk in Detroit, Michigan on August 31. -
1930
single sideband and frequency modulation were invented by amateur radio operators. -
1940
The first experimental FM radio station was granted a construction permit by the US Federal Communications Commission. -
1950
Regency introduced a pocket transistor radio powered by a standard 22.5V battery. -
1960
Sony introduced their first transistorized radio, able to be powered by a small battery. It was durable because there were no tubes to burn out. -
1970
LORAN became the premier radio navigation system. -
1980
The U.S. Navy experimented with satellite navigation, culminating in the launch of the Global Positioning System constellation. -
1990
Amateur radio experimenters began to use personal computers with audio cards to process radio signals. -
2000
Most Internet Radio Stations increased their stream quality as bandwidth became more economical. -
2010
The average amount of time spent listening increased from 11 hours
