radio history

By jh5115981@gmail.com
  • discover of radio waves

    discover of radio waves

    Heinrich Hertz proved the existence of radio waves in the late 1880s. He used a spark gap attached to an induction coil and a separate spark gap on a receiving antenna. When waves created by the sparks of the coil transmitter were picked up by the receiving antenna, sparks would jump its gap as well.
  • Musical Theatre Radio

    Musical Theatre Radio

    MTR -Musical Theatre Radio is dedcated to plaiing stage shows from the musical theatre repertoire raging from the 1890's to now.
  • musical

    musical

    The Isle of Champagne (R), 5/29/1893, Miner's Fifth Avenue, 48
  • radio inventor

    radio inventor

    Guillermo Giovanni Maria Marconi, 1st Marquis of Marconi FRSA was an Italian inventor and electrical engineer, known for his pioneering work on long-distance radio transmission, development of Marconi's law, and a radio telegraph system.
  • radio communication

    radio communication

    By 1899 he flashed the first wireless signal across the English Channel and two years later received the letter "S", telegraphed from England to Newfoundland.
  • radio act

    radio act

    Radio Act of 1912
    In 1912, the sinking of the Titanic due to delayed emergency signals
  • first commercial AM Audion vacuum tube radio transmitter

    first commercial AM Audion vacuum tube radio transmitter

    The first commrcial AM Audion vacuum tube radio transmitter, built in 1914 by Lee De Forest
  • first radio in public

    first radio in public

    The early 1920s to distribute ... American Marconi and future president of the Radio Corporation of America (RCA), to author his first "Radio Music Box"
  • first radio station

    first radio station

    station KDKA
    On November 2, 1920, station KDKA made the nation's first commercial broadcast (a term coined by Conrad himself).
  • Radio navigation

    Radio navigation

    Radio navigation plays an important role during war time, especially in World War II.
  • The Radio Act of 1927

    The Radio Act of 1927

    The Radio Act of 1927
    The Radio Act of 1927 gave the Federal Radio Commission the power to grant and deny licenses
  • money by selling radios

    money by selling radios

    The early history of radio is the history of technology that produces and uses radio instruments ... Meanwhile, record sales fell from $75 million in 1929 to $26 million in 1938 (with a low point of $5 million in 1933), though the economics of the ... The store was broadcasting music from its store on the radio station WOR.
  • FM radio

    FM radio

    In 1933, FM radio was patented by inventor Edwin H. Armstrong.[78] FM uses frequency modulation of the radio wave to reduce static and interference from electrical equipment and the atmosphere.
  • first commercially produced transistor radio.

    first commercially produced transistor radio.

    The Regency TR-1, which used Texas Instruments' NPN transistors, was the world's first commercially produced transistor radio.
  • first commercial all-digital radio transmitter

    first commercial all-digital radio transmitter

    2015 The first commercial all-digital radio transmitter, called Pizzicato, was introduced