Imgres

history of radio

By js206936

  • first radio signal

    marconi sent and recieved the first radio signal.

  • audion tube

    lee de forest created the audion tube that amplified signals.

  • first radio station

    KDKA was invented by frank conrad. its still around today in pennsylvania.

  • The dawn of advertising

    in 1922 weaf aired a 10 minute commercial. they got 50$.

  • Established FRC

    they prganized lisencing of transmitters and assighned radio frequences and power limits.
  • Period: to

    golden era

    radio provided family medium shows. also had a little music

  • FM transmitter

    edwin armstrong invented the fm transmitter. listeners where forced to buy better radio sets.

  • tv makes an apperance

    advertisers go to tv and radio shows jumped the boat.