ok so ive been licensed for about 8 months now and i keep seeing all these weird abbreviations everywhere. like QSO, QRM, QSB, QTH and a bunch of others. i know QSL means like... confirming a contact? but the rest i have to keep googling every single time and its getting old. is there like a short list of the ones that actually matter day to day because the full list of Q codes is like 200 entries long and most of them seem to be old maritime stuff that nobody uses anymore. also whats the difference between 73 and 88, i see those too. just trying to get my bearings here

yeah the full ITU Q code list is pretty overwhelming, most of it is irrelevant for amateur use. the ones you'll actually hear or see constantly are probably QSO (a contact/conversation), QRM (interference from other stations, man-made), QRN (natural noise like static from storms), QSB (signal fading, usually propagation related), QTH (your location), QRZ (who is calling me), QSL (confirmed, or the physical card), and QRP which means low power operation though a lot of guys use that loosely. QRT means you're shutting down or going off air. there's also QSY which is changing frequency.

73 just means best regards, it's been around since the telegraph days. 88 means love and kisses, traditionally sent to a woman though honestly you hear it all over the place now without much thought. some old timers get a bit prickly about using 88 casually but most people don't care.

also worth knowing - on FT8 and digital modes you'll see a lot of abbreviations that aren't Q codes at all, like RR73 which is just a sign-off that rolled two things together. once you're on the air for a while it just starts to stick naturally.

honestly i was in the same boat when i started. the one that tripped me up forever was QRN vs QRM, i kept mixing them up. i just eventually remembered it as RM = man-made (the M) and RN = natural. probably dumb but it worked for me lol

also QRO is the opposite of QRP, means running high power. you see that a lot in contest threads when people are debating whether someone was running legal limits