Radio and Television

By benzimmerman

  • 1880

    1880
    David Edward Hughes performed the first intentional transmission of a signal by means of electromagnetic waves.

  • 1890

    1890
    Italian inventor, Guglielmo Marconi, builds the first wireless telegraphy system based on airborne Hertzian waves.

  • 1900

    1900
    Brazilian priest, Roberto Landell de Moura transmits the human voice wirelessly for a distance approximately a half a mile.

  • 1910

    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