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The old C&W Z codes are not widely used today. 2. APCO [clarification needed] also developed a system of Z codes. [1] 3. NATO forces independently developed a later set of Z codes for military use and inter-language needs. The NATO Z codes are still in use, and are published in the unclassified document ACP-131.
ACP-131 [1] is the controlling publication for the listing of Q codes and Z codes. It is published and revised from time to time by the Combined Communications Electronics Board (CCEB) countries: Australia, New Zealand, Canada, United Kingdom, and United States.
Electronic Code of Federal Regulations (e-CFR). Cornell Law School. "Message Precedence Designators". Georgia Wing. CAPR 100-1 Vol III (E) 3-2a. Civil Air Patrol. 21 Aug 2000. Archived from the original on Oct 18, 2004. "The National Communications System (NCS) Voice Precedence System". DISA Circular 310-70-1 Methods and Procedures (PDF ...
Q and Z codes, also called Q and Z signals may refer to: Q code, 3-letter code beginning with Q and used by radiotelegraph and other radio services;
The QSA code and QRK code are interrelated and complementary signal reporting codes for use in wireless telegraphy . An enhanced format, SINPO code , was published in the ITU Radio Regulations, Geneva, 1959, [ 1 ] but is longer and unwieldy for use in the fast pace of Morse code communications.
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This is a list of all airline codes. The table lists the IATA airline designators , the ICAO airline designators and the airline call signs (telephony designator). Historical assignments are also included for completeness.
Similarly, ZIP + 4 codes allow postal service providers to get even more specific about the destination of your mail. Most frequently utilized in larger, more dense cities, ZIP + 4 codes can ...