It is almost certain you will have to use it in your conversations. You will often be required to spell a certain word or name in your radio conversations to make sure you are understood. Using the phonetic equivalents instead of letters will make sure letters such as 'F' are not misinterpreted as 'S', 'T' as 'C, or 'M' as 'N'.
Following is a list showing the international phonetics used for the alphabet:
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