National Communications Magazine. Italian 1. Taking the example of QSL. Q code use The Q codes have two forms. A total of forty-five Q-codes appeared in the "List of Abbreviations to be used in Radio Communications", which was included in the Service Regulations affixed to the Third International Radiotelegraph Convention in London The Convention was signed on July 5, , and became effective July 1, Will vessels in my immediate vicinity Are you a cargo vessel?
Amateur radio informal Q-code
The Q-code is a standardized collection of three-letter codes all of which start with the letter "Q". It is an operating signal initially developed for commercial radiotelegraph communication and later adopted by other radio services, especially amateur radio. To distinguish the use of a Q-code transmitted as a question from the same Q-code transmitted as a statement, operators either prefixed it with the military network question marker " INT " dit dit dah dit dah or suffixed it with the standard Morse question mark UD dit dit dah dah dit dit. Although Q-codes were created when radio used Morse code exclusively, they continued to be employed after the introduction of voice transmissions. To avoid confusion, transmitter call signs are restricted; no country is ever issued an ITU prefix starting with "Q". The original Q-codes were created, circa , by the British government as a "list of abbreviations A total of forty-five Q-codes appeared in the "List of Abbreviations to be used in Radio Communications", which was included in the Service Regulations affixed to the Third International Radiotelegraph Convention in London The Convention was signed on July 5, , and became effective July 1,
The Q-code is an international set of abbreviations that was created at the beginning of the last century to simplify radiotelegraph communication. Each code is composed by three letters always starting with Q. Each code can be a question if followed by a question mark or an answer or statement if not. To avoid confusion, no station call-sign begins with Q. Even if initially designed for telegraphy, it's also used in voice communications.
The Q code arose out of the need to communicate quickly and concisely when using Morse code, but its use has spread more widely than that, especially within amateur radio. As the terms have been used widely in Morse operation, their use also spread into voice communications as well. The Q code is an extensive set of codes covering an extremely wide variety of phases. These were used by marine, airborne and even land-based communications. The code meanings are defined in ITU International Telecommunications Union documentation and they were introduced primarily for professional communications. However they are very convenient and easy to use and as a result their use has been widely adopted by radio hams as well. The Q codes have two forms.