THAT was the deciding factor for me ... I had to learn to take morse code at (I think it was 45wpm .. but I honestly forget)
It was radio school I learned for the first time crossing sevens and zees (european style) and boxing the letter U so it doesn't get mixed up with the V.
To this day, if and when I have to spell something to a telephone jerk, they ALWAYS repeat with an entirely different phonetic.
My Sirius XM is MU7Y72WV and when I called about a problem I identified; Mama Uniform 7 Yankee 7 2 Whiskey Victor, which was repeated back to me, Michael Umbrella 7 Yes 7 2 Wonder Victor.
I congratulated the person on the other end for getting one of them correct.
When did M become Mamma? It's Mike in the military.
Since I use an older phonetic alphabet, I would say, "Mike Uncle 7 Yoke 7 2 Willie Victor."