radio history

By stevoh

  • Radio Invention

    Marconi was an italian inventor. He sent and recieved the first radio signal in 1895. It wasnt real radio, it was a radio signal. Some say he was not the first, maybe it was good public relations.

  • FM Waves

    FM Waves
    Frequency Modulation. 88 to 108MHz. 1000KHz=1MHz

  • Audion Tube

    Lee De Forest created(or borrowed the idea for) the audion tube. It is a vacuum tube that amplified signals. Believed that a canadian inventor, Reginald Fessenden, acyually came up with the idea, but he didnt make it to the history books.

  • AM Waves

    AM Waves
    Is an Amplitude Modulation. 535 KHz-1605KHz. Modulation means change.

  • Radio Stations

    First radio station aired in 1920. Named 8XK, later renamed KDKA. Aired by Frank Conrad. Still around today broadcasting out of Pittsburgh, Pennsylvania.

  • The Dawn Of Advertising

    It's the reason why radio stations make their money. In 1922, WEAF aired a 10 minute 'commercial' . It was a toll broadcast, for an apartment complex charging $50.

  • Call Letters

    Call Letters
    Call Letters identify the radio stations. W is east of the Mississippi River. K is West of the Mississippi River.

  • FRC Federal Radio Commisioner

    The independent radio stations were too popular. Organize the licensing of transmitters. Assigning radio station frequencies, call letters, and power limits.

  • Golden Era

    Golden Era
    Happened in the 1930s and 1940s. Everyone listened to radio. Radio provided an escape during hard times.

  • Family Medium

    The entire family enjoyed radio together. Big band music and story hour. situational comedies and dramas.

  • Radio Shows to TV

    Radio Shows to TV
    It was hard to renact the characters from radio to tv. The appearance wouldnt match the description of the radio characters. The broadcaster may sound like the character but not look like them.

  • Radio's Demise

    Radio's Demise
    Tv makes appearance in the late 1930s. and ruins all chances of radio getting high in the ratings chart. then music ends up saving radio.

  • music saves radio

    music on the radio filled the void. you could listen to music without all the work of having to go to the store and by the record. and you could listen to the radio in the cars.

  • Radio in todays society.

    Radio is no modernized and can be looked up on the internet. You can downloald and listen to anywhere. Music is sometimes illeagalt downloaded