ACP-131 is the controlling publication for the listing of Q codes and Z codes.
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Cable & Wireless Worldwide PLC (informally Cable & Wireless) was a British multinational telecommunications services company headquartered in Bracknell, United Kingdom.
A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency; and in mathematical analysis, of infinite duration.
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A mnemonic (RpE:, AmE: the first "m" is silent), mnemonic device, or memory device is any learning technique that aids information retention in the human memory.
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The North Atlantic Treaty Organization (NATO; Organisation du traité de l'Atlantique Nord; OTAN), also called the North Atlantic Alliance, is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on 4 April 1949.
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The Q code is a standardized collection of three-letter message encodings, also known as a brevity code, all of which start with the letter "Q", initially developed for commercial radiotelegraph communication, and later adopted by other radio services, especially amateur radio.
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Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link.
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Russia (Ru-Россия.ogg), also officially known as the Russian Federation (a), is a country in northern Eurasia.
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A teleprinter (teletypewriter, Teletype or TTY) is an electromechanical typewriter that can be used to send and receive typed messages from point to point and point to multipoint over various types of communications channels.
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