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Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. Morse code is named after Samuel Morse, one of the early developers of the system adopted for electrical telegraphy.
End of Morse code requirement. In 2003, the International Telecommunication Union (ITU) ratified changes to the Radio Regulations to allow each country to determine whether it would require a person seeking an amateur radio operator license to demonstrate the ability to send and receive Morse code. The effect of this revision was to eliminate ...
See media help. SOS is a Morse code distress signal ( ), used internationally, originally established for maritime use. In formal notation SOS is written with an overscore line ( SOS ), to indicate that the Morse code equivalents for the individual letters of "SOS" are transmitted as an unbroken sequence of three dots / three dashes / three ...
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.
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.
References. Prosigns for Morse code. Diagram of a telegraph key used to send messages in Morse code. Procedural signs or prosigns are shorthand signals used in Morse code telegraphy, for the purpose of simplifying and standardizing procedural protocols for landline and radio communication.
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.
Greek. The Greek Morse code alphabet is very "similar" to the Latin alphabet. The "similarity" is based first on optical resemblance of each letter, a.k.a glyph, and then secondly on sound. Example, A both in Greek and English is the same glyph and sound (like a in word apple).
In time, the Morse code that he developed would become the primary language of telegraphy in the world. It is still the standard for rhythmic transmission of data. Meanwhile, William Cooke and Professor Charles Wheatstone had learned of the Wilhelm Weber and Carl Gauss electromagnetic telegraph in 1833.
Morse code is the best-known such code. Telegraphy usually refers to the electrical telegraph , but telegraph systems using the optical telegraph were in use before that. A code consists of a number of code points , each corresponding to a letter of the alphabet, a numeral, or some other character.