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History of Early Radio Technology
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History of Early Radio Technology

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    History of Early Radio Technology History of Early Radio Technology Presentation Transcript

    • 1800’s-1950 A BRIEF HISTORY OF EARLY RADIO TECHNOLOGY AND APPLICATION
    • Developed during the 1800’s – allowed users to send Morse Code. WIRELESS RADIO
    • Developed technology to send the first long- distance wireless radio telegraphs. 1897 – started the Marconi Wireless Telegraph Company 1899 – transmitted a message across the English Channel 1901 – transmitted a message across the Atlantic Ocean GUGLIELMO MARCONI (ITALIAN – 1874-1937)
    • Developed amplitude- modulated (AM) radio. 1906 – Performed the first broadcast of the human voice and music This is important because the signal was received by several different receivers, therefore it was truly a “broadcast,” whereas pervious transmissions were sent to a single receiver. REGINALD FESSENDEN (CANADIAN – 1986-1932)
    • 1906 – Patented the Audion Tube 1920-1930 – Developed a means to record sound onto film, making the first movies with synch sound. LEE DE FOREST (AMERICAN – 1873-1961)
    • 1933 – Patented Frequency Modulation (FM) radio Despite its early discovery, FM is not widespread until the 1970’s. EDWIN ARMSTRONG (AMERICAN – 1890-1954)
    • The United States government began requiring radio operators to obtain licenses to send out signals and mandated that seagoing vessels continuously monitor distress frequencies This was prompted by the sinking of the Titanic. Because a nearby ship heard its distress signals, hundreds of people were saved. RADIO ACT OF 1912
    • RADIO CORPORATION OF AMERICA (RCA) 1919 - Formed to manage the patents for the technology of the radio receiver and transmitter.
    • 1906 – worked for the Marconi Wireless Telegraph Company 1912 – Rose to fame after he claimed to be the only telegraph operator working to relay news about the survivors of the Titanic. 1919-1970 – Led RCA DAVID SARNOFF (BELARUSIAN – 1891-1971)
    • October 1920 - received its license and went on the air as the first US licensed commercial broadcasting station. November 1920 - broadcast the election returns of the Harding- Cox presidential election KDKA IN PITTSBURG, PA
    • 1926 - began regular broadcasting, with telephone links between New York and other Eastern cities. NBC became the dominant radio network, splitting into Red and Blue networks. NATIONAL BROADCASTING COMPANY (NBC)
    • RADIO ACT OF 1927 Transferred most of the responsibility for radio to a newly created Federal Radio Commission. The five-person FRC was given the power to grant and deny licenses, and to assign frequencies and power levels for each licensee. The Commission was not given any official power of censorship, although programming could not include "obscene, indecent, or profane language." Re-assigns stations to clearer frequencies, and for the first time makes radio stations operate in the public interest, convenience and necessity.
    • President Roosevelt is the first “radio president” and his “fireside chats” help to give confidence to Americans during their darkest hour. Radio Programming consists of variety, comedy, soap operas, serious drama, live music, quiz shows. Newspapers fear that the immediacy of radio news will drive them out of business. RADIO DURING THE GREAT DEPRESSION
    • Replaced the Federal Radio Commission with the Federal Communications Commission (FCC). 1934 COMMUNICATIONS ACT
    • MISSION OF THE FCC To make available so far as possible, to all the people of the United States, without discrimination on the basis of race, color, religion, national origin, or sex: • “Rapid, efficient, Nation-wide, and world-wide wire and radio communication services with adequate facilities at reasonable charges." The Act furthermore provides that the FCC was created "for the purpose of the national defense" and "for the purpose of promoting safety of life and property through the use of wire and radio communications.”
    • Nine in ten families owned a radio, and they listened to an average of three to four hours of programming a day, using it as their main source of news. RADIO DURING WWII
    • THE DECLINE OF RADIO When television becomes affordable in the 1940’s, radio begins a slow decline in popularity. Most radio became disc-jockey-based, playing music.