History Of Radio

By kevinE345

  • 1888: Heinrich Hertz detects and produces radio waves.

    Heinrich Hertz detects and produces radio waves.

  • 1894: Marchese Guglielmo Marconi builds his first radio equipment, a device that will ring a bell from 30 ft. away.

    Marchese Guglielmo Marconi builds his first radio equipment, a device that will ring a bell from 30 ft. away.

  • 1899: Marconi establishes first radio link between England and France.

    Marconi establishes first radio link between England and France.

  • 1900: American scientist R.A. Fessenden transmists human speech via radiowaves.

    1900: American scientist R.A. Fessenden transmists human speech via radiowaves.

  • 1901: Marconi transmits telegraphic radio messages from Cornwall to Newfoundland

    1901: Marconi transmits telegraphic radio messages from Cornwall to Newfoundland

  • 1920: KDKA broadcasts the first regular licensed radio broadcast out of Pittsburgh, PA.

    1920: KDKA broadcasts the first regular licensed radio broadcast out of Pittsburgh, PA.

  • 1925: WJR-AM offers educational broadcasting spots to the UM. The UM continued to broadcast on WWJ as well.

    1925: WJR-AM offers educational broadcasting spots to the UM. The UM continued to broadcast on WWJ as well.

  • 1931: The UM School of Music pursues the idea of radio as education. It taught school band lessons via radio.

    1931: The UM School of Music pursues the idea of radio as education. It taught school band lessons via radio.

  • 1933: Educational programming originating at the UM grows.The Regents of the UM become interested in radio.WJR cuts the UM's educational broadcasts for commercial broadcasting.Edward Armstrong patents wide-band frequency modulation (FM radio).

    1933: Educational programming originating at the UM grows.
    The Regents of the UM become interested in radio.
    WJR cuts the UM's educational broadcasts for commercial broadcasting.
    Edward Armstrong patents wide-band frequency modulation (FM radio).

  • 1935: FM radio is born, but only in mono.

    1935: FM radio is born, but only in mono.