ok so i just got my technician license a few weeks ago and ive been listening to a lot of QSOs on the local repeater trying to figure out how people actually talk on air. i noticed some people spell things out with like alpha bravo charlie and stuff but other times people just say the letter normally. is there like a rule for when you're supposed to use the NATO phonetics vs just saying it? i feel like i'd sound weird or pretentious just going around saying foxtrot and november all the time when i could just say the letter F or N or whatever. also i saw somewhere that not everyone uses the same phonetics? like sometimes people say something different for a letter and im not sure if thats wrong or just an older way of doing it

yeah there's no hard rule really, it's more of a feel thing. generally on a clear repeater with someone local you probably dont need to phonetic everything out, but when you're giving your callsign or spelling something where a mistake would matter — like a name or a grid square or whatever — that's when you reach for phonetics. the NATO alphabet is just the standard everyone's trained on so it's the safest bet. the reason you'll hear different ones is that before NATO standardized everything people were using all kinds of variations, Able Baker Charlie for instance was the old US military set, and some old timers still slip into that. there's also just... people who make stuff up when they blank on the real one lol, like i've heard guys say Lincoln instead of Lima and nobody really cares as long as it's clear. just use NATO when you can and you'll be fine

honestly the one time phonetics really matter and people dont think about it enough is when conditions are bad or you're working someone with a heavy accent. had a contact on 20m last winter and the guy kept saying a letter that sounded exactly like another letter to me, couldnt figure out if his suffix was DF or TV or what, and if he had just gone full phonetic from the start we wouldve saved like 5 minutes of back and forth. so i guess my take is dont overthink it on local VHF but on HF especially when the band is rough just use them, your signal report and callsign at minimum