Why amateurs use abbreviations
Abbreviations began in the days of Morse code, when every letter took time to send. Many have carried over into voice and digital modes and into the culture of the hobby, so you'll hear "seventy-three" on SSB and see 73 at the end of an FT8 contact. Some, like the Q codes, are international and mean the same in every language.
The ones everyone uses
- 73 means best regards, and is never "73s". 88 means love and kisses, usually only between friends or partners.
- OM (old man) means any male operator, whatever his age, and YL (young lady) any female operator. XYL, ex-young lady, is a wife.
- QSL means "I confirm", and also the card that confirms a contact. The QSL card designer makes one.
- FB, fine business, means excellent.
Prosigns
In Morse, prosigns are sent as a single run of characters without a gap. AR marks the end of a message, K invites anyone to reply, KN invites only the station you're working, and SK ends the contact. The Morse translator plays them, and the Q codes page explains every Q code in full.
Questions
What does 73 mean in ham radio?
Best regards. It's used at the end of a contact, and is never pluralised as 73s.
What does 88 mean?
Love and kisses, used between close friends or partners.
What does XYL mean?
A wife, from ex-young lady. YL means any female operator, and OM any male operator.
What does QSL mean?
I confirm, or received. A QSL card is the printed confirmation of a contact.