so ive been listening on 40m a lot lately and people keep throwing around all these weird codes like QRM and QSB and QTH and i kind of get some of them from context but not really. is there like a master list somewhere or do people just memorize them over time? also some guys on the repeater use abbreviations too like 73 and 88 and someone said something about OM and YL and i had no clue what they were talking about. i feel like everyone just assumes you already know this stuff when youre new

yeah there's definitely a learning curve with this stuff, nobody explains it upfront. the Q codes go back to like telegraphy days so theres a ton of them but in practice you really only hear maybe 15-20 regularly on the air. QRM is interference from other stations, QRN is natural noise like static, QSB is when your signal is fading in and out, QTH is your location, QSL means confirmed or yes i received that, and QRZ means who is calling me basically. once you start hearing them in context they stick pretty fast.

as for the other stuff, 73 just means best regards or goodbye basically, its the standard signoff. 88 is hugs and kisses and some people get real particular about who they say that to lol. OM means old man which sounds rude but its just what guys call each other, YL is young lady. if someones wife or girlfriend is a ham shes usually called XYL. its a whole little vocabulary honestly, just takes a few months of listening and it clicks

ARRL website has a pretty decent list if you just search for it. i bookmarked it when i was studying for my tech. QRP is also one you hear a lot which means low power operation, some guys are really into running like 5 watts or less and they make a whole thing of it. QRO is the opposite, high power. QRM i still have trouble with sometimes because people also just say the word interference so it catches me off guard when they switch to the code mid sentence