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  2. Morse code abbreviations - Wikipedia

    en.wikipedia.org/wiki/Morse_code_abbreviations

    Morse code abbreviations are used to speed up Morse communications by foreshortening textual words and phrases. Morse abbreviations are short forms, representing normal textual words and phrases formed from some (fewer) characters taken from the word or phrase being abbreviated. Many are typical English abbreviations, or short acronyms for ...

  3. Morse code - Wikipedia

    en.wikipedia.org/wiki/Morse_code

    This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur [ 2 ] Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. [ 3 ][ 4 ] Morse code is named after Samuel Morse, one of the early ...

  4. Friedrich Clemens Gerke - Wikipedia

    en.wikipedia.org/wiki/Friedrich_Clemens_Gerke

    Friedrich Clemens Gerke, 1840. Friedrich Clemens Gerke (22 January 1801 – 21 May 1888) was a German writer, journalist, musician and pioneer of telegraphy who revised the Morse code in 1848. It is Gerke's version of the original (American) Morse code now known as the International Morse code and standardized by the ITU (International ...

  5. Prosigns for Morse code - Wikipedia

    en.wikipedia.org/wiki/Prosigns_for_Morse_code

    For example, when embedded in text the Morse code sequence represents the "double hyphen" character (normally "=", but also "– –"). [1] When the same code appears alone it indicates the action of spacing down two lines on a page in order to create the white space indicating the start of a new paragraph [ 2 ] or new section in a message ...

  6. Elf Bar - Wikipedia

    en.wikipedia.org/wiki/Elf_Bar

    Elf Bar is an electronic cigarette brand manufactured by the Chinese firm iMiracle Shenzhen (iMiracle HK in the United Kingdom [1]). Also sold as EBDesign and EBCreate, the vapes are characterized by their fruity flavors and colorful appearance. Although the brand is best known for its disposable vapes, reusable variants are also available but ...

  7. Beat frequency oscillator - Wikipedia

    en.wikipedia.org/wiki/Beat_frequency_oscillator

    Beat frequency oscillator. In a radio receiver, a beat frequency oscillator or BFO is a dedicated oscillator used to create an audio frequency signal from Morse code radiotelegraphy (CW) transmissions to make them audible. The signal from the BFO is mixed with the received signal to create a heterodyne or beat frequency which is heard as a tone ...

  8. Telegraph key - Wikipedia

    en.wikipedia.org/wiki/Telegraph_key

    Telegraph key. A Morse Key from G. Hasler, Bern (1900) first used by Gotthard Railway. A telegraph key or Morse key is a specialized electrical switch used by a trained operator to transmit text messages in Morse code in a telegraphy system. Keys are used in all forms of electrical telegraph systems, including landline (also called wire ...

  9. American Morse code - Wikipedia

    en.wikipedia.org/wiki/American_Morse_code

    American Morse Code — also known as Railroad Morse—is the latter-day name for the original version of the Morse Code developed in the mid-1840s, by Samuel Morse and Alfred Vail for their electric telegraph. The "American" qualifier was added because, after most of the rest of the world adopted " International Morse Code," the companies that ...