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Learn about the origin, development and features of Morse code, a method of encoding text characters as dots and dashes for telecommunication. Find out how Morse code is used in different languages, media and applications, and how it is transmitted and received.
Learn about the history and usage of the NATO phonetic alphabet, which is also known as the ICAO spelling alphabet, and how it differs from other military alphabets. See tables of the alphabet words and their pronunciation for different services and nations.
Learn about the history and features of the original version of Morse Code developed by Samuel Morse and Alfred Vail for electric telegraph. Find out how it differs from International Morse and why it is nearly extinct.
Learn how to remember Morse code characters using visual, syllabic, or word mnemonics. See examples of mnemonics for letters, numbers, punctuation, and other symbols.
Learn the history and usage of the most widely used set of clear-code words for communicating the letters of the Roman alphabet, such as Alpha, Bravo, Charlie and Delta. The code words are also known as NATO spelling alphabet, ICAO phonetic alphabet and radiotelephony spelling alphabet.
Learn how to use Morse code abbreviations to speed up Morse communications by foreshortening textual words and phrases. See the table of selected abbreviations and their meanings, and the difference between abbreviations and prosigns.
Prosigns are shorthand signals used in Morse code telegraphy to simplify and standardize procedural protocols. Learn about their history, notation, representations, and international variations.
Learn about the standard military radiogram format for voice, Morse code, or TTY transmission. See the structure, history, and examples of the 16-line message format.