so ive been licensed for about 3 months now and i keep seeing all these weird abbreviations everywhere, like in other peoples logbooks, on cluster spots, people saying them on CW which i dont even do yet, and honestly i feel like im missing half the conversation all the time. like what even is QRM vs QRN, i thought they were the same thing but apparently not? and then theres QSB which i think has to do with signal fading but im not sure. also people say stuff like OM and YL and 73 and i kinda get those from context but not really. is there like a master list somewhere or does everyone just kind of pick this stuff up over time. my elmer hasnt really gone over any of this with me and i dont want to bug him again this week

QRM is interference from other stations, like someone transmitting on your frequency or adjacent to it, basically man-made noise. QRN is natural static and atmospheric noise, like lightning crashes and that kind of thing. so yeah pretty different once you know. QSB is signal fading, you're right on that one. and 73 just means best regards, everyone uses it as a goodbye. OM is old man which sounds rude but its just what hams call other male operators, YL is young lady and thats for female operators regardless of age. there used to be XYL for a married woman but you hear that less now. honestly the ARRL has a Q code reference sheet somewhere on their site and theres a few laminated cards you can buy that have the common ones. after a while you just absorb them without thinking about it, especially if you hang around on HF and watch the clusters or read other peoples logs

yeah i was totally lost on this stuff too when i first got my ticket. the one that got me for a long time was QRZ, i kept thinking it meant someone was calling CQ but it actually just means whos calling me or whos there. totally different vibe. also QTH is your location which you hear constantly on phone too not just CW. dont stress too much about memorizing all of them at once, the ones that come up in conversation you'll just start remembering naturally. the weird obscure ones like QUG or whatever nobody really uses anyway