# Brevity code

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Radio and telegraph signals encoding longer definitions

**Brevity codes** are used in [amateur radio](/source/Amateur_radio), maritime, aviation, police, and military communications. They are designed to convey complex information with a few words or codes. Some are [classified](/source/Classified_information) from the public.

## List

- [ACP-131](/source/ACP-131) Allied military brevity codes

- [ARRL Numbered Radiogram](/source/ARRL_Numbered_Radiogram)

- [Commercial codes](/source/Commercial_code_(communications)) such as the *[Acme Commodity and Phrase Code](/source/Acme_Commodity_and_Phrase_Code)*, the *ABC Telegraphic Code*, *Bentley's Complete Phrase Code*, and *Unicode*

- [Fox](/source/Fox_(code_word))

- [Multiservice tactical brevity code](/source/Multiservice_tactical_brevity_code) used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words, when brevity is required but security is not

- [Ten-code](/source/Ten-code), North American police brevity codes, including such notable ones as 10-4

- [Phillips Code](/source/Phillips_Code)

- [NOTAM Code](/source/NOTAM_Code)

- [Q code](/source/Q_code), currently used mainly by amateur radio operators especially when using Morse code, originally designed for use by British ships and coastal stations

- [Wire signal](/source/Wire_signal), Morse Code abbreviation, also known as [92 Code](/source/92_Code). Appears in informal language-independent ham conversations

- [World War II Allied names for Japanese aircraft](/source/World_War_II_Allied_names_for_Japanese_aircraft)

## See also

- [Operating signals](/source/Operating_signals)

- [SINPO code](/source/SINPO_code), code used to describe the quality of radio transmissions, especially in reception reports written by shortwave listeners

- [R-S-T system](/source/R-S-T_system), information about the quality of a radio signal being received. Used by amateur radio operators, shortwave listeners

- [Morse code abbreviations](/source/Morse_code_abbreviations)

- [Telegraphese](/source/Telegraphese)

- [List of HTTP status codes](/source/List_of_HTTP_status_codes)

- [Tactical designator](/source/Tactical_designator)

## External links

- [Brevity codes](https://wiki.radioreference.com/index.php/Brevity_codes) on the RadioReference wiki

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