Brevity code

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Brevity codes are used in amateur radio, maritime, aviation and military communications. The codes are designed to convey complex information with a few words or codes. Some terms are classified to the public.

Examples:

  • RST code - information about the quality of a radio signal being received. Used by amateur radio operators, shortwave listeners. Widespread use by 1912.
  • SINPO code - code used to describe the quality of radio transmissions, especially in reception reports written by shortwave listeners.
  • Q code - initially developed for commercial radiotelegraph communication, and later adopted by other radio services, especially amateur radio. Used since circa 1909.

Multiservice tactical brevity code[edit]

Multiservice tactical brevity codes are codes used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words.