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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.
Q code is a collection of operating signals for commercial and amateur radio communication. It includes codes for questions, answers, notices, meteorology, and other topics, with different ranges for aeronautical, maritime, and all services.
Prosigns are shorthand signals used in Morse code telegraphy to simplify and standardize procedural protocols. Learn about their history, notation, representations, and international variations.
Morse code is a system of encoding text characters as dots and dashes for telecommunication. Learn about its development by Samuel Morse and Alfred Vail, its international alphabet and variations, and its applications and history.
QSA and QRK are codes for reporting signal strength and readability in wireless telegraphy. Learn the history, current format, and examples of these codes from the ITU Radio Regulations and other sources.
Learn how to remember Morse code characters using visual, syllabic, or word mnemonics. See examples of mnemonics for letters, numbers, punctuation, and other symbols.
A QSL card is a written confirmation of a radio communication or reception, often used by amateur radio operators. Learn about the origin, format, exchange and collection of QSL cards, as well as electronic alternatives.
Learn about the different formats and codes for reporting the strength and quality of radio signals and voice communications. The R-S-T system uses 1 to 5 for readability and 1 to 9 for signal strength, while the SINPO and SINPEMFO codes use 1 to 5 for each factor.