History of radio sonos

Radio History

By Thinh
  • Maconi

    Maconi
    Italian Inventor
    Sent and Recieved first Radio Signal in 1895
    Was he the first or was it a case of Good PR
  • Audion Tube

    Audion Tube
    In 1906, Lee de Forest, created (or "borrowed" the idea for) the audion tube, a vacuum tube that amplified sinals
    It is widely beleived that a Canadian inventor, Reginald Fessenden, actually come up with the idea, but Fessenden didn't seem to make it into the history books for that invention
  • AM Radio

    AM Radio
    The technology of amplitude modulation (AM) radio transmission was developed during the two decades from 1900 to 1920. Before this, the first radios transmitted information by wireless telegraphy, in which the radio signal did not carry audio but was switched on and off to create pulses that carried text messages in Morse code
  • Titanic

    Titanic
    he RMS Titanic sank. While in distress, it contacted several other ships via wireless. After this, wireless telegraphy using spark-gap transmitters quickly became universal on large ships. The Radio Act of 1912 required all seafaring vessels to maintain 24-hour radio watch and keep in contact with nearby ships and coastal radio stations
  • Radio Stations

    Radio Stations
    8XK, later renamed KDKA
    Frank Conrod
    Still around Today broadcasting out of Pittsburg, Pennsylvania
  • THe Dawn of Advertising

    THe Dawn of Advertising
    In 1922 WEAF aired a 10 minute "commercial" or toll broadcast, for an Apartment Complex charging $50
  • FRC

    FRC
    -Uncle Charlie was too popular
    -Establish FRC in 1927
    *Organize the licensing of transmitter
    *Assigning radio radio station frequencies, call letters, and power

    limits
  • First Radio Station

    First Radio Station
    Several radio station claim to be the first public radio station. Some include KDKA Pittsburgh and 9XM University of Wisconsin.
  • FM Radio

    FM Radio
    Edwin Armstrong invents FM (frequency modulation) radio. FM provides static-free broadcasting and carries the full frequency range of sound perceptible to the human ear
  • Invasion from Mars

    Invasion from Mars
    CBS broadcasts Orson Welles" adaptation of The War of the Worlds on a Halloween episode of the popular show Mercury Theatre on the Air. THis caused panic among listeners who thought the alien invasion was real.
  • Rock and Roll Emergies

    Rock and Roll Emergies
    y the mid-50s, white entertainers who imitated and emulated black R&B singers from the 1940s were starting to be heard in big cities like New York and Cleveland. Elvis Presley and others were getting air play and selling records.
  • Radio Suffers

    Radio Suffers
    Television is such a novelity that big stars, programs, and advertisers defeat from radio o TV. Radio begins to localize and concentrate on playing records
  • Transistor Radio

    Transistor Radio
    Regency indotruces the pocket transistor radio, the TR-1, which was powered by a standard 22.5V battery.
  • Beatles

    Beatles
    In 1963, just as the AM top 40 stations seemed to be sounding tired, a group of British acts arrived to influence the world music scene. Led by the Beatles and Stones, AM top-40 would rebound because of the new music.
  • FM Makes a Comeback

    FM Makes a Comeback
    Pop music was better and it demanded a delivery service that sounded as good as a home audio system. AM stations still refused to play the new music from albums and were suddenly facing new competition from FM stations that would play the music.