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1933 Specialized Auto Radio Manual Volume 1

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    Posted 2 years ago

    dav2no1
    (837 items)

    1933 Specialized Auto Radio Manual Volume 1

    Picked this up awhile back. Nice manual that covers car radios of the era. Also has schematics, ignition interference troubleshooting, mounting radio chasis. Remember the radios of the era were often very large. Often they had a huge unit and then a control unit. Additionally they had vacuum tubes in them.

    Note in the picture...that's Stromberg - Carlson TELEPHONE mfg co.

    MAY 13, 1897 ...THE FIRST?
    Guglielmo Marconi sent the world's first radio message across open water. He called it "telegraphy without wires" - known to us now as radio. Of course we now know that he built the unit using ideas that Nikola Tesla had invented.

    MARCH 1, 1893...THE FIRST
    Nikola Tesla gave a public demonstration of the wireless transmission of energy. He had created an induction coil to transmit and receive radio signals. Years later while he was preparing to transmit signals at a distance, so was another inventor: Guglielmo Marconi.

    FIRST RADIO PROGRAM TRANSMISSION
    "Christmas Eve 1906, Fessenden used a synchronous rotary-spark transmitter for the first radio program broadcast, that included Fessenden playing O Holy Night on the violin and reading a passage from the Bible."

    FIRST CAR RADIO - CHEVROLET
    " In the 1920s Chevrolet was the first to come up with an in-car radio, and it was neither compact nor cheap. The first car radio had an aftermarket add-on cost of $200(a lot at that time! In 1922, wages per hour was 65.7 cents and average full-time earnings per week were $37.05 ) and the antenna covered most of the roof of the car. The radio itself took up a significant amount of passenger space, but also required large batteries that were crammed under the front seat and large speakers that had to be mounted behind the back seat."

    A GENIUS IDEA
    "Paul Galvin figured out that if he could just find a way to make the radios more affordable, he’d be rich."

    With money from investors, he retrofitted his Studebaker with his invention and then drove 800 miles to the annual meeting of the Radio Manufacturer’s Association in Atlantic City.

    Parking his car outside the building, Galvin turned up the radio and started taking orders for his invention, which cost less than half of the others on the market. He named his company Motorola"

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    Comments

    1. dav2no1 dav2no1, 2 years ago
      ***Links to automotive radio history**

      https://www.caranddriver.com/features/a15128476/the-history-of-car-radios/

      https://blog.nationwide.com/vehicle/vehicle-technology-trends/car-radio-history/

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