73 in Morse code
73 in Morse code is --... ...--. Among radio amateurs it means "best regards", and it is the most common way to end a Morse code contact.
Where 73 comes from
Telegraph operators in the 1800s used number codes to save time on common phrases. Most of them are long forgotten, but 73 and 88 survived. Its meaning shifted a few times before it settled on best regards early in the 1900s. It is always written 73, never 73s, because it already means regards.
The other number code still in daily use is 88, love and kisses, sent as ---.. ---...
Every digit in Morse code is five symbols long. Note how 7 (--...) and 3 (...--) are mirror images of each other. See all numbers on the Morse code alphabet chart.
Translate anything
Type any word into the Morse code translator to hear it, flash it or download it as audio. Every letter, number and sign is on the Morse code alphabet chart, and the trainer teaches you to read Morse code by ear.