![]() Saint Paul, Minnesota Police Department Īt some point in the early history of emergency service mobile radio systems, the LAPD adopted the APCO radio spelling alphabet for relaying precise information on individual letters.A partial list of police departments using the modern APCO/ICAO spelling alphabet includes: However, most police departments nationwide have kept using the 1940 APCO spelling alphabet, with those using the 1974 APCO spelling alphabet being the exception, rather than the rule. In 1974, APCO adopted the ICAO International Radiotelephony Spelling Alphabet, replacing the Adam-Boy-Charlie alphabet APCO first published in 1940. Replacement with international spelling alphabet The resulting final list differs from the Bell Telephone word list by only five words, and from the Western Union word list by only eight words. Lists used by military services were excluded because of a lack of permission to reproduce. The questionnaire solicited suggestions, but also included the existing Western Union and Bell Telephone word lists, plus another list then in general use by a number of police stations. ![]() The list was based on the results of questionnaires sent out by the Procedures Committee to all zone and interzone police radio stations. By this point, APCO President Herb Wareing "came out in favor of a standard list of words for alphabet letters, preferably suitable for both radiophone and radiotelegraph use." The APCO first suggested that its Procedure and Signals Committee work out a system for a "standard set of words representing the alphabet should be used by all stations" in its April 1940 newsletter. In 1974, APCO adopted the ICAO Radiotelephony Spelling Alphabet, making the APCO alphabet officially obsolete however, it is still widely used, and relatively few police departments in the U.S. Despite often being called a "phonetic alphabet", it is not a phonetic alphabet for transcribing phonetics. It is the "over the air" communication used for properly understanding a broadcast of letters in the form of easily understood words. LAPD radio alphabet, is the term for an old competing spelling alphabet to the ICAO radiotelephony alphabet, defined by the Association of Public-Safety Communications Officials-International from 1941 to 1974, that is used by the Los Angeles Police Department (LAPD) and other local and state law enforcement agencies across the state of California and elsewhere in the United States. The phonetic alphabet can also be signaled with flags, lights, and Morse Code.Old word list for law enforcement agencies ![]() The phonetic alphabet is a list of words used to identify letters in a message transmitted by radio, telephone, and encrypted messages. It is now very widely used by all types of "professional communicators" including air traffic control, the police and other emergency services, shipping, etc and in all types of business. They had to make sure that each chosen word sounded different to the others, and was easily pronounceable by speakers of all the European languages, not just in English. It is called the "NATO" alphabet because it was standardised by the NATO member countries back in the 1950s to allow accurate exchange of radio messages between air, naval and army forces of all the NATO member nations. Numbers are pronounced as normal, except often 9 is pronounced " Niner" so it doesn't get confused with 5. The standard "NATO" phonetic alphabet (actually the International Radio-Telephony Spelling Alphabet) is:Īlfa, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu. The "NATO" / ICAO / ITU Phonetic Alphabet / Army Alphabet / Police Alphabet Using the phonetic alphabet to spell out names, locations and so on makes accurately understanding messages a lot easier, because many letters can be easily confused when heard over a crackly radio link (B, C, D, P, T and M, N and F, S, etc). When you are spelling out a name, location, code, registration number, postcode etc, over a noisy or faint radio or phone link, it is easy for letters and numbers to be misheard. The International Radiotelephony Spelling Alphabet (IRSA) is its proper name, and it was created by the International Civil Aviation Organization (ICAO) to help decipher similar sounding letters and numbers between different countries and organizations. ![]()
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