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History of Radio

By Lyna
  • Marconi

    Marconi

    ( the Italian Inventor) Sent and recieved the 1st Radio Signal
  • The Audion Tube

    The Audion Tube

    (by Lee De Forest) ~ a vacuum tube that amplified signals
    Believed:(Canadian Inventor, Reginald Fessenden) came up with the idea.
    Radio impacted the "Titanic", helped communicate to save lives.
  • Radio Station:

    Radio Station:

    The 1st radio station was invented, by Frank Conrad.
    In Pittsburg, Pennsylvania
    It was called 8KX the changed KDKA(channel: 1020)
  • AM Waves and FM Waves

    AM Waves and FM Waves

    AM Waves: -amplitude modulation; changing height of wave(535 kHz - 1605 kHz) FM Waves: -frequency modulation; changing distance of wave(88 MHz - 108 MHz)
  • Call Letters

    Call Letters

    -to identify the location of the radio station
    W = East of the Mississippi River
    K = West of the Mississippi River
  • FRC(Federal Radio Commision)

    FRC(Federal Radio Commision)

    Created because of Uncle Charlie being too popular.
    Uncle Charlie: ~are what they called Personal Radio station.
    -organized licensing of transmitters
    -assigning radio station frequencies/call letters/ and power limits.
  • Golden Era: Family Medium

    Golden Era: Family Medium

    -(AKA: Radio) for the entire family can enjoy together. Contain big band music, story hour, situational comedies(sitcom), and dramas. (provided an escape from the depression and war.
    Famous Shows: Amos n Andy, Gun Smoke, The Shadow, Our Miss Brooks, Superman, Dick Tracey, Little Orphan Annie, and $64 Dollar Question
  • Change in Radio and Radio Today

    Change in Radio and Radio Today

    Shows got moved to TV and the radio lost money, so they SAVED RADIO with talks on AM, and Music on FM.
    Major Edwin Armstrong invented FM Transmitter = stronger signal and higher quality sound. Radios Today: Spotify, Pandora, YouTube, Last FM, ITunes, and Sirius