Operating signals are a type of
brevity code
Brevity is concision or brevitas, the quality of being brief or concise, or:
* Brevity (comic strip), ''Brevity'' (comic strip), a comic strip created by Guy Endore-Kaiser and Rodd Perry
* Brevity code, a vocal word replacement system
* Operation ...
used in operational communication among radio and telegraph operators. For example:
*
Prosigns for 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. The procedural signs are distinct from conventional Morse ...
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92 Code
A wire signal is a brevity code used by telegraphers to save time and cost when sending long messages. The best-known code was the 92 Code adopted by Western Union in 1859. The code was designed to reduce bandwidth consumption over telegraph lin ...
: telegraph brevity codes
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Q code
The Q-code is a standardised collection of three-letter codes that each start with the letter "Q". It is an Operating signals, operating signal initially developed for commercial radiotelegraphy, radiotelegraph communication and later adopted b ...
: initially developed for commercial radiotelegraph communication and adopted by other radio services
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QN Signals
The QN Signals are Morse code operating signals that were introduced for Amateur radio net operation in 1939 on the Michigan QMN Net to lighten the burdens of net control operators. Originally created by a committee of the Detroit Amateur Radio A ...
: published by the
ARRL
The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the United States. ARRL is a non-profit organization and was co-founded on April 6, 1914, by Hiram Percy Maxim and Clarence D. Tuska of H ...
and used in
Amateur radio
Amateur radio, also known as ham radio, is the use of the radio frequency radio spectrum, spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emer ...
* R and S brevity codes: published by the British Post Office in 1908 for coastal wireless stations and ships, superseded in 1912 by Q codes
* X code: used by European military services in wireless telegraphy
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Z code
Z Code (like Q Code and X Code) is a set of operating signals used in CW, TTY and RTTY radio communication.
Distinct versions
There are at least three sets of Z codes.
:
There are other sets of codes internally used by Russia
...
: used in early radiotelegraph communication
See also
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Brevity code
Brevity is concision or brevitas, the quality of being brief or concise, or:
* Brevity (comic strip), ''Brevity'' (comic strip), a comic strip created by Guy Endore-Kaiser and Rodd Perry
* Brevity code, a vocal word replacement system
* Operation ...
*
SINPO code
SINPO, an acronym for Signal, Interference, Noise, Propagation, and Overall, is a Signal Reporting Code used to describe the quality of broadcast and radiotelegraph transmissions. SINPFEMO, an acronym for Signal, Interference, Noise, Propagatio ...
- code used to describe the quality of radio transmissions, especially in reception reports written by shortwave listeners
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R-S-T system
The R-S-T system is used by amateur radio operators, shortwave listeners, and other radio hobbyists to exchange information about the quality of a radio signal being received. The code is a three digit number, with one digit each for conveying a ...
- information about the quality of a radio signal being received. Used by amateur radio operators, shortwave listeners.
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Morse code abbreviations
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 ...
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Telegraphese
Telegram style, telegraph style, telegraphic style, or telegraphese is a clipped way of writing which abbreviates words and packs information into the smallest possible number of words or characters. It originated in the telegraph age when teleco ...
External links
Nonsecret Code: An Overview of Early Telegraph Codes
References
{{Morse code