History of Radio and TV

By hannah.crim
  • James Maxwell

    James Maxwell

    showed electromagnetic waves could propagate through free space
  • Guglielmo Marconi

    Guglielmo Marconi

    built the first complete, commercially successful wireless telegraphy system based on airborne Hertzian waves (radio transmission)
  • Roberto Landell de Moura

    Roberto Landell de Moura

    Transmitted first human voice wirelessly at a distance of about half a mile
  • First Radio Broadcast

    First Radio Broadcast

    Station 8MK was the first radio broadcaster and is still around today as WWJ under ownership of CBS
  • AT&T Commercialized the Mobile Telephone Service

    AT&T Commercialized the Mobile Telephone Service

    AT&T introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948
  • Sony

    Sony

    Introduced transistorized radio that was small enough to fit in a vest pocket powered by a small battery.
  • First colored TV

    First colored TV

    Colored television was being broadcast commercially
  • U.S. Navy

    U.S. Navy

    The U.S. Navy experimented with satellite navigation, culminating in the launch of the GPS
  • Carl Malamud

    Carl Malamud

    Launched the Internet Talk Radio which was the first computer-radio talk show each week
  • American Population Listening to Radio Increases

    American Population Listening to Radio Increases

    13% of the population listens to radio online, compared to 11% in 2007