The name NATO phonetic alphabet became widespread because the signals used to facilitate the naval communications and tactics of the United States and NATO have become global. Because the latter allows messages to be spelled via flags or Morse code, it naturally called the code words used to spell out messages by voice its “phonetic alphabet”. The alphabet’s common name (NATO phonetic alphabet) arose because it appears in Allied Tactical Publication ATP-1, Volume II: Allied Maritime Signal and Maneuvering Book used by all allied navies in NATO, which adopted a modified form of the International Code of Signals. NATO uses the normal English numeric words (Zero, One, with some alternative pronunciations), whereas the IMO uses compound numeric words (Nadazero, Unaone). The same alphabetic code words are used by all agencies, but each agency chooses one of two different sets of numeric code words. It is a subset of the much older International Code of Signals (INTERCO), which originally included visual signals by flags or flashing light, sound signals by whistle, siren, foghorn, or bell, as well as one, two, or three letter codes for many phrases. It is used by many national and international organizations, including the International Civil Aviation Organization (ICAO), the International Telecommunication Union (ITU), the International Maritime Organization (IMO), the North Atlantic Treaty Organisation (NATO), the Federal Aviation Administration (FAA), and the American National Standards Institute (ANSI). The paramount reason is to ensure intelligibility of voice signals over radio links. Instead, the NATO alphabet assigns code words to the letters of the English alphabet acrophonically so that critical combinations of letters (and numbers) can be pronounced and understood by those who transmit and receive voice messages by radio or telephone regardless of their native language, especially when the safety of navigation or persons is essential. Though often called “phonetic alphabets”, spelling alphabets have no connection to phonetic transcription systems like the International Phonetic Alphabet. A poor signal but clear text using the phonetic alphabet.The NATO phonetic alphabet, more formally the international radiotelephony spelling alphabet, is the most widely used spelling alphabet. Using what we now know, let’s listen to the car registration example again, and look how we would write these entries into our log book. Such as I SPELL CHARLIE ALPHA DELTA ECHO TANGO, or FIGURES FIVE NINE SIX ONE Example FIGURES (when you are about to pass numeric information).I SPELL (when you are about to pass phonetic letters).When we need to spell out a word or number, we use two prowords to warn the radio operator on the other end that we are about to pass over this information. If we have mastered the phonetic alphabet, we need to know how to pass information using it. The letter ZULU is hand written with a bar through it to avoid confusion with the figure TWO The figure ONE is hand written with a dash along the bottom to avoid confusion with the letters INDIA or LIMA The figure ZERO is hand written with a slash through it to avoid confusion with the letter OSCAR The main figures and letters to write differently are: But if we are clear about how we write the number 1 for example, with a bar at the bottom, errors should not occur. When typed this is not a problem, provided all upper case letters are used (capital i – I looks similar to lowercase L – l). The digits 1, 7, I and L could all look very similar if written in a sloppy manner. In order to prevent misunderstandings when writing transcribing messages, some letters or numbers that could be confused with other similar ones are written differently to avoid this confusion. Written Variationsĭid you notice any differences in the way the letters of numbers were written in the table above? There are a few. You can listen to the numbers 0-9 spoken phonetically. You can listen to the alphabet A-Z spoken phonetically.
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