The history of radio

By jaydentshill

  • Hertzian waves

    Hertzian waves
    Hertz was able to send radio waves through air

  • Marconi invents radio

    Marconi invents radio
    Marconi invented radio how ever some people debate that he didnt but got it to the press.

  • telefunken

    telefunken
    telefunken society of wierless telfon

  • Audion Tube

    Audion Tube
    lee de forest invents the Audion Tube first amplifier

  • KDKA

    KDKA
    first radio startion, made by frank conrad.

  • First commerical

    First commerical
    WEAF aired the first commerical

  • FRC

    FRC
    assinged frequencies to stations

  • FM radio

    FM radio
    frequency modulation of the radio wave reduces static sounds