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Morse Code

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  • Morse Code, named after inventor Samuel Morse, was the main type of high speed communication in the late 19th century and the first half of the 20th century. Though initially used with the telegraph, Morse Code can also be used effectively to communicate via flashing lights or repeated sounds. Although rapidly fading from usage, it is still popular with amateur radio operators and airline pilots must be familiar with it.JRG Beavon: Morse Code
  • Fast Facts

    1. First transmission: May 24, 1844Qsl.net: What Is Morse Code?
    2. Inventor: Samuel Morse
    3. First used on: Telegraph
    4. Patent number: 1,647Invent.org: Inventor Profile: Samuel F.B. Morse
    5. Uses dashes (dahs), dots (dits) and four types of gaps
    6. "Help": SOS (Morse: ... --- ...)
    7. First Morse Code message was "What hath God Wrought"Omniglot: Morse Code Origin
    8. Can be transmitted by sound or lightOmniglot: Morse Code Origin
  • SOS

    Despite common misconceptions, SOS does not stand for "Save Our Ship" or "Save Our Souls". The sounds are easiest to hear through static, which is why they were selected as the standard international distress call. Though adopted in 1908 as the standard distress calls, others were also in use until shortly after the Titanic sinking on April 15, 1912
  • SOS Facts

    • Became standard distress call: July 1, 1908
    • First SOS transmitter: Cunard liner Slavonia
    • Date: June 10, 1909
    • Previous distress call: CQD (Come Quick Distress)
    • Titanic used both CQD and SOS
    • U.S. Coast Guard stopped listening for SOS signals in 1990s
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