Spelling alphabet - Wikipedia
https://en.wikipedia.org/wiki/Spelling_alphabetA spelling alphabet (also called by various other names) is a set of words used to stand for the letters of an alphabet in oral communication (speech), especially when over a two-way radio or telephone. The words are chosen because they sound sufficiently different from each other to avoid any confusion that could easily otherwise result from the names of letters that sound similar except for some small difference easily missed or easily degraded by the imperfect sound quality of the a…