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Electromagnetic waves can propagate through free space.
In 1864, James Clerk Maxwell showed in theoretical and mathematical form that electromagnetic waves could propagate through free space. -
Guglielmo Marconi built the first complete, commercially successful wireless telegraphy system.
In 1894 the Italian inventor Guglielmo Marconi built the first complete, commercially successful wireless telegraphy system based on airborne Hertzian waves (radio transmission). -
Marconi goes big
In 1896, Marconi was awarded British patent and in 1897 he established a radio station in England. -
The human voice test works
In 1900, Brazilian priest Roberto Landell de Moura transmitted the human voice wirelessly for a distance of approximately a half mile. -
Vaccum tube detector
On Christmas Eve 1906, Reginald Fessenden used a synchronous rotary-spark transmitter for the first radio program broadcast, from Ocean Bluff-Brant Rock, Massachusetts. -
First radio new program
The first radio news program was broadcast August 31, 1920 by station 8MK in Detroit, Michigan, which survives today as all-news format station WWJ under ownership of the CBS network. -
Mobile telephone service
In 1947 AT&T commercialized the Mobile Telephone Service. From its start in St. Louis in 1946, AT&T then introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948. -
Color television
By 1963, color television was being broadcast commercially (though not all broadcasts or programs were in color), and the first (radio) communication satellite, Telstar, was launched. -
Broadcasting on the internet
On November 7, 1994, WXYC (89.3 FM Chapel Hill, NC USA) became the first traditional radio station to announce broadcasting on the Internet. -
Australia gets internet radio
In 1998, the longest running internet radio show,[24] "The Vinyl Lounge", commenced netcasting from Sydney, Australia, from Australia's first Internet Radio Station, NetFM (www.netfm.net).
