so ive been listening on HF for a few weeks now and people throw around all this shorthand constantly and i can only figure out maybe half of it from context. like i get QSL means confirmed or acknowledged but then someone said QRM and QRN and i wasnt sure which was which, one is interference from other stations and one is natural static? and then theres QSY which i think means change frequency but i never know for sure if im right

also on top of the Q codes theres all the other abbreviations like 73 and 88 and de and stuff like that. is there like a definitive list somewhere or do people just pick this up over time. i dont want to sound totally clueless when i finally get on air and transmit

yeah you pretty much had QRM and QRN right, QRM is interference from other man-made signals like another station bleeding over or someone keying up nearby, and QRN is natural stuff, lightning crashes, static from weather that kind of thing. QSY is definitely change frequency, you'll hear that one a lot especially when someone wants to move a contact to a less busy part of the band.

the ARRL publishes a Q code list and its in the back of the handbook if you have one, also just searching "Q codes list" will get you a dozen decent pages. honestly though most of the common ones you'll just absorb after a while. QTH is your location, QSL is confirm/acknowledge, QRZ means whos calling me or sometimes people use it wrong to mean who is that. QRP means low power which a lot of guys run intentionally. 73 is best regards basically, old telegraph thing, and 88 is love and kisses which you mostly hear used between operators who know each other or sometimes a husband and wife team. de just means from, so like W1ABC de K4XYZ means K4XYZ is calling W1ABC.

dont stress too much about sounding clueless, everyone was there once and most hams are pretty patient with new folks

one thing that tripped me up when i started was that Q codes technically are questions when used as questions and answers when someone responds, like QRM? means are you experiencing interference and QRM without the question mark means yes im experiencing interference. in practice on voice nobody really does it that formally though, people just say QRM to mean theres interference and leave it at that. CW ops tend to be a bit more traditional about it

also OM means old man which sounds rude but its actually just a friendly term for any male ham, and YL is young lady but gets used for any female operator. you'll hear those alot