The international telecommunication union phonetic alphabet is a standardized and we've all heard them before, Alpha Bravo Charlie Golf Foxtrot Lima X-ray Yankee Zulu just to name a few. There is another alphabet commonly in use with law enforcement and sounds quite different yet again familiar, Adam Boy, Charles, Edward Nora etc.
Not all radio transmissions will be perfectly clear, especially on the lower frequencies that Ham and CB use. Or even distant VHF/UHF stations. Static and terrain or other obstacles may hinder the reception of a radio transmission. Establish your groups SOP and avoid intermixing common SOP words with made up personal words.
Why bother with phonetic alphabet. Spell the word SPEED p sounds like e, e sounds like d, d sounds like p. Say the word speed, did you just say peed? What do you mean you peed?
Sierra Pappa echo echo Delta is....
Numbers and number groups are unique on radio. Numbers are digits individually stated. 15 is one five, 78 seven eight 99 niner niner 10 is one zero. 100 is one hundred but 101 is one zero one 956 niner five six. 15000 is one five thousand.
Two numbers are pronounced differently on radio phonetically, 4 for-or and 9 niner. There is no number Oh. The letter O is Oscar the number 0 is zero. Right?, Right.