A new version incorporating sounds common to English, French, and Spanish was proposed by the International Air Transport Association (IATA) and came into effect on 1 November 1951 for civil aviation only. Two years later, the British Royal Air Force decided to use the Able Baker alphabet as well.Īble, Baker, Charlie, Dog, Easy, Fox, George, How, Item, Jig, King, Love, Mike, Nan, Oboe, Peter, Queen, Roger, Sugar, Tare, Uncle, Victor, William, X-ray, Yoke, ZebraĪ common criticism of these alphabets was that they were rather English in composition. On the military side, the United States adopted a Joint Army/Navy Phonetic Alphabet, called the Able Baker alphabet after the first two code words, across all of its military branches in 1941. It featured names of cities across the globe.Īmsterdam, Baltimore, Casablanca, Denmark, Edison, Florida, Gallipoli, Havana, Italia, Jerusalem, Kilogramme, Liverpool, Madagascar, New York, Oslo, Paris, Quebec, Roma, Santiago, Tripoli, Uppsala, Valencia, Washington, Xanthippe, Yokohama, Zurich. In the 1920s, the International Telecommunication Union (ITU) produced the first phonetic alphabet to be recognized internationally. However, it took several adaptations before the version used today came into effect. As noted above, the codes may not be completely correct, as an agency may have unique meanings for their 10-Codes.The NATO phonetic alphabet became effective in 1956 and just a few years later became the established universal phonetic alphabet. It may assist if you are listening to the police or other agency radio traffic and do not fully understand the conversation. This list is provided as informational only. FEMA suggests that radio traffic be conducted in “plain talk” as much as possible to avoid misunderstandings. Local agencies or police departments may have their own non-standard meaning for a specific 10-Code which may lead to confusion if you assume they are using the standard code. While there is a suggested set of standard codes created by the APCO (Association of Police Communications Officers) they are not mandated as a standard. While you may hear these codes in use over the radio, it is best to avoid their use for general or emergency communications. The most famous of these 10-Codes maybe 10-4 heard on many TV police dramas, meaning “Over and Out”. For example, to say “dog,” one would say “Delta-Oscar-Golf.” None of the 26 code words sound alike, so there is no doubt what is said when spelling this way.ġ0-Codes are a series of shorthand radio codes generally used by Police and government agencies. Multiple code words often are combined to form words or expressions. For instance, “Alpha” means “A,” “Bravo” means B, and so on. This version is very common and used by many US Federal Agencies and the United States Armed Forces.Įach word represents one letter of the alphabet. The IRSA Phonetic Alphabet consists of 26 code words that substitute each letter of the alphabet. The most common phonetic alphabet is known as the International Radiotelephony Spelling Alphabet (IRSA). The phonetic alphabet is used to spell out letters or words when communications are difficult or the environment is noisy. Many words sound similar and easily can be misunderstood, the same is true for some letters when you attempt to spell something out. If you’ve ever talked on a cell phone or a radio with bad reception or in a loud place, you know how difficult it can be to communicate accurately.
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