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Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.
ACP-131 Allied military brevity codes; ARRL Numbered Radiogram; Commercial codes such as the Acme Commodity and Phrase Code, the ABC Telegraphic Code, Bentley's Complete Phrase Code, and Unicode; Fox; Multiservice tactical brevity code used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey ...
Best regards + Love and kisses; used on YL networks as a sign-off sum of two 92 Codes: 30: No more; this is the end; finished Not used in radiotelegraphy 92 Code: 72: Best regards: Amateur radio slang. While operating QRP / low power 92 Code: 73: Best regards: 92 Code: 75: Derogatory term for a disliked operator (Referring to 75 meter ham band)
Voice procedure communications are intended to maximize clarity of spoken communication and reduce errors in the verbal message by use of an accepted nomenclature. It consists of a signalling protocol such as the use of abbreviated codes like the CB radio ten-code, Q codes in amateur radio and aviation, police codes, etc., and jargon.
In radiotelegraph operation, a Q code is often shorter, [39] and provides codes standardized by meaning in all languages – essential for international shortwave radio communications. Z codes are used for military radio communications NATO countries, and like Q codes are standardized across languages.
A spelling alphabet (also called by various other names) is a set of words used to represent the letters of an alphabet in oral communication, especially over a two-way radio or telephone. The words chosen to represent the letters sound sufficiently different from each other to clearly differentiate them.
Before the JAN phonetic alphabet, each branch of the armed forces had used its own radio alphabet, leading to difficulties in interbranch communication. The US Army used this alphabet in modified form, along with the British Army and Canadian Army from 1943 onward, with "Sugar" replacing "Sail". The JAN spelling alphabet was used to name ...
Morse code, is commonly used in Amateur radio. Morse code abbreviations are a type of brevity code. Procedure words used in radiotelephony procedure, are a type of radio code. Spelling alphabets, including the ICAO spelling alphabet, are commonly used in communication over radios and telephones.