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Procedural signs or prosigns are shorthand signals used in Morse code radio telegraphy procedure, for the purpose of simplifying and standardizing radio communication protocol. They are separate from Morse code abbreviations, which consist mainly of brevity codes that convey messages to other parties with greater speed and accuracy. The development of prosigns began in the 1860s for wired telegraphy. Since telegraphy preceded voice communications by several decades, many of the much older Morse prosigns have acquired precisely equivalent prowords for use in more recent voice protocols.

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  • Funkverkehrszeichen, auch Morseverkehrszeichen, kurz Verkehrszeichen, sind besondere Morsezeichen, die, anders als die üblichen, keine Buchstaben, Ziffern oder Satzzeichen darstellen, sondern Steuerzeichen sind. Damit werden im Funkverkehr, speziell im Amateurfunk, besondere Aktionen gekennzeichnet, beispielsweise der Spruchanfang oder sein Ende. Die Verkehrszeichen sind zu unterscheiden von den üblichen Abkürzungen im Amateurfunk. Während letztere als einzelne Buchstaben gesendet werden, beispielsweise tnx (▄▄▄ ▄▄▄ ▄ ▄▄▄ ▄ ▄ ▄▄▄ ) für „Danke“ (thanks), werden Verkehrszeichen (englisch Procedure signs or prosigns) stets ohne Pause zwischen den Morsezeichen der Buchstaben gefunkt, zum Beispiel ar (▄ ▄▄▄ ▄ ▄▄▄ ▄ ), das übrigens auch das Pluszeichen repräsentiert, als Kennzeichnung des Endes einer Nachricht. Um die fehlende Pause zwischen den Buchstaben hervorzuheben, sind die Buchstaben hier und in der folgenden Tabelle – wie international üblich – durch Überstreichung markiert. Die Abkürzung SK wird außerhalb der Betriebstechnik auch als Silent Key (schweigende Taste) als Hinweis auf den Tod eines Hams verwendet. (de)
  • Procedural signs or prosigns are shorthand signals used in Morse code radio telegraphy procedure, for the purpose of simplifying and standardizing radio communication protocol. They are separate from Morse code abbreviations, which consist mainly of brevity codes that convey messages to other parties with greater speed and accuracy. In general prosigns are just standardised parts of short form radio protocol, and can include any abbreviation. An example would be K for "okay, heard you, continue". In a more limited role the term refers to something akin to that of the nonprinting control characters in teleprinter and computer character sets, such as Baudot or ASCII. Different from abbreviations, those are universally recognizable across language barriers as distinct and well-defined symbols. At the coding level, prosigns admit any form the Morse code can take, unlike abbreviations which have to follow letter form. Many of them are longer than typical characters and are rendered without intercharacter commas or pauses. They are individual and indivisible code points within the broader Morse code, fully at par with basic letters. The development of prosigns began in the 1860s for wired telegraphy. Since telegraphy preceded voice communications by several decades, many of the much older Morse prosigns have acquired precisely equivalent prowords for use in more recent voice protocols. In printed material describing their meaning and use, prosigns are represented by either a sequence of dots and dashes for the sound of a telegraph, or by an overlined sequence of letters composed of International Morse Code, which if sent without the usual spacing, sounds like the prosign symbol. The most well-known example of the convention is the preamble to the standard distress call: SOS. As a prosign it is not really composed of the separate letters S, O and S, but is run together as a single symbol of ▄ ▄ ▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄ ▄ ▄ ; it is a sign in its own right. Not all prosigns are standardised. There are specialised variations of the coding convention used in certain radio networks to manage transmission and formatting of messages, and many conventions approximating prosigns but not quite being such exist. Such variants might not be unambiguous. One typical example of something which is not a recognized prosign but is yet recognizable is one or two freely timed dits at the end of a message, for OUT (the formal version being prosign AR, or ▄ ▄▄▄ ▄ ▄▄▄ ▄ ) (en)
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  • K morse code.ogg (en)
  • Morse Code - Ampersand.ogg (en)
  • Morse Code - Plus.ogg (en)
  • Morse Code - Question Mark.ogg (en)
  • R morse code.ogg (en)
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  • yes (en)
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  • Funkverkehrszeichen, auch Morseverkehrszeichen, kurz Verkehrszeichen, sind besondere Morsezeichen, die, anders als die üblichen, keine Buchstaben, Ziffern oder Satzzeichen darstellen, sondern Steuerzeichen sind. Damit werden im Funkverkehr, speziell im Amateurfunk, besondere Aktionen gekennzeichnet, beispielsweise der Spruchanfang oder sein Ende. Die Abkürzung SK wird außerhalb der Betriebstechnik auch als Silent Key (schweigende Taste) als Hinweis auf den Tod eines Hams verwendet. (de)
  • Procedural signs or prosigns are shorthand signals used in Morse code radio telegraphy procedure, for the purpose of simplifying and standardizing radio communication protocol. They are separate from Morse code abbreviations, which consist mainly of brevity codes that convey messages to other parties with greater speed and accuracy. The development of prosigns began in the 1860s for wired telegraphy. Since telegraphy preceded voice communications by several decades, many of the much older Morse prosigns have acquired precisely equivalent prowords for use in more recent voice protocols. (en)
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  • Funkverkehrszeichen (de)
  • Prosigns for Morse code (en)
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