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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. ==Major published brevity codes== * ACP-131 Allied military brevity codes * 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. * Q code - initially developed for commercial radiotelegraph communication, and later adopted by other radio services, especially amateur radio. Used since circa 1909. * RST code - information about the quality of a radio signal being received. Used by amateur radio operators, shortwave listeners. Widespread use by 1912. * Ten-code - North American police brevity codes, including such notable ones as 10-4. * Z code - also used in the early days of radiotelegraph communication. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「brevity code」の詳細全文を読む スポンサード リンク
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