Radio Time-Line timeline.

Jan 1, 1888

1880s

Heinrich Rudolf Hertz was able to provide airborne electromagnetic waves in an experiment confirming Maxwell's theory of electromagnetism.
Jan 1, 1890

1890's

In 1890, Marcani was awarded British patent and in 1897 He established a radio station.
Jan 1, 1900

1900s

Roberto Landell de Moura transmitted the human voice wirelessly, and could talk a half mile away.
Jan 1, 1910

1910's

Marconi opened the world's first purpose built radio factory in Chelmford,England.
Aug 31, 1920

1920s

The first radio news program was broadcast August 31st, 1920 by 8MK in Detroit, Michigan.
Jan 1, 1930

1930s

In the early 1930s, single sideband and frequency were invented by amateur radio operators.
Jan 1, 1940

1940s

Commercial television transmissions started in North America and Europe.
Jan 1, 1950

1950s

1955, the newly formed Sony company introduced its first transistorized radio.
Jan 1, 1960

1960s

1963 the color television was being broadcast.
Jan 1, 1970

1970s

LORAN became the premier radio navigation system in the 1970s.
Aug 1, 1987

1980s

In 1987 culminating the launch GPS, the U,S, Navy experimented it with satellite
Nov 7, 1994

1990s

In November, WXYC became the first traditional radio station to announce broadcasting on the Internet
Jun 26, 2006

2000

Many U.S. radio participated in "Day of Silence"

1880s