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Chart of the Morse code 26 letters and 10 numerals [1]. 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.
Morse code mnemonics are systems to represent the sound of Morse characters in a way intended to be easy to remember. Since every one of these mnemonics requires a two-step mental translation between sound and character, none of these systems are useful for using manual Morse at practical speeds.
Morse code abbreviations are not the same as prosigns.Morse abbreviations are composed of (normal) textual alpha-numeric character symbols with normal Morse code inter-character spacing; the character symbols in abbreviations, unlike the delineated character groups representing Morse code prosigns, are not "run together" or concatenated in the way most prosigns are formed.
The procedure signs below are compiled from the official specification for Morse Code, ITU-R M.1677, International Morse Code, [1] while others are defined the International Radio Regulations for Mobile Maritime Service, including ITU-R M.1170, [8] ITU-R M.1172, [4] and the Maritime International Code of Signals, [5] with a few details of their ...
The Russian Morse code approximates the Morse code for the Latin alphabet.It was enacted by the Russian government in 1856. [1] [2]To memorize the codes, practitioners use mnemonics known as напевы (loosely translated "melodies" or "chants").
So the baud rate of a Morse code is 50 ⁄ 60 × word per minute rate. It is standard practice to use two different such standard words to measure Morse code speeds in words per minute. The standard words are: "PARIS" and "CODEX". In Morse code "PARIS" has a dot duration of 50, while "CODEX" has 60.
The following telegraph code table is adapted from one given by Ashok Kelkar, [2] where the Latin letters are encoded as per the International Morse code standard. Some variations on this code exist, [3] and there have been some attempts to introduce other telegraph codes either to improve efficiency or to apply to more Indian languages.
Morse code, and many other codes, also do not have the same length of code for each character of the word, again introducing a content-related variable. To overcome this, the speed of the operator repeatedly transmitting a standard word is used. PARIS is classically chosen as this standard because that is the length of an average word in Morse. [7]