73s

73s is a term often used in amateur radio communication. It refers to a shorthand code used for brevity and clarity during radio transmissions. The specific meaning of "73" is "best regards" or "goodbye" and is typically sent at the end of a conversation. It is one of the most widely recognized and used Q-codes in the amateur radio hobby. The origin of these codes, including 73, can be traced back to the early days of telegraphy and were adopted by radio operators to standardize communication. While 73 is primarily associated with amateur radio, its usage has occasionally spread to other informal communication contexts. It is a simple, yet enduring, part of radio culture.