COM 107 Chapter Notes - Chapter 5: Wireless Telegraphy, Drive Time, Podcast
13 Feb 2016
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Morse code system of dots and dashes. 1866- first transatlantic cable along ocean floor. James maxwell- electromagnetic waves radiate in space at speed of light radio waves could be released from a transmission point. Marconi wireless telegraphy (voiceless point to point communication) Used on british ships: signals clashed with one another. De forest competed with marconi interest in wireless voice and music transmissions. Essential in radio and tv developments new meaning of broadcasting form of narrowcasting issues: ship requirements and signal interference. Wireless ship act in 1910: titantic sunk in 1912. Radio act of 1912 waves could not be owned. Founding of the rca ge taking over marconi monopolize wireless industry: ensure us control over communication lines, less than 20% owned by foreignors. Westinghouse established kdka start of broadcast radio. At&t began making and selling its own waivers. Toll broadcasting right to sell ads. Rights to interconnect 2 stations with wires: first network cost saving.
