so ive been licensed for about 4 months now and i keep going back and forth on this. like sometimes i hear people on 2m just saying letters normally when they give their callsign and other times everyone is doing the full NATO thing. is there a rule about when you have to use phonetics or is it just kind of a preference thing? i was on a local repeater last week and someone corrected me for NOT using phonetics and i felt kind of dumb but then the next day i heard a bunch of guys just rattling off callsigns with regular letters and nobody said anything. im confused about when its actually required vs just good practice

there's no FCC rule that says you must use phonetics every single time, at least not for US amateur operators. the requirement is just that your callsign is clearly identifiable at the end of a transmission and every 10 minutes during a contact. how you make it identifiable is kind of up to you. that said, phonetics exist for a reason — on a noisy band or when conditions are bad, B and D and E can all sound alike and phonetics clear that right up. on a quiet local repeater with good signals most people skip them or just do it out of habit. the guy who corrected you was probably just being old-school about it, which isnt necessarily wrong, just not legally required. when youre doing HF or making contacts with someone you dont know id say always use phonetics at least the first time so they copy your call correctly. becomes second nature pretty quick.

yeah honestly when i was starting out i just memorized the NATO alphabet and used it every time no matter what, felt safer that way. some of the older hams on the local repeater nets are really particular about it and some dont care at all. i think on simplex or HF you really do want to use them because even a tiny bit of qsb can make a letter disappear. i still sometimes blank on a letter and say something dumb like november oscar tango alpha for no reason on a crystal clear local contact lol but whatever