Amateurs often are left wondering where some of the traditions & conventions used in Amateur Radio came from. It is always a surprise to learn that some are 150 years old predating the hobby by many decades.
One often asked is where did 73 as shorthand for “Best Regards” come from and when did it come into use?
ARRANGED BY THE
PROFESSORS AND TUTORS
“MORSE’S TELEGRAPH INSTITUTE”
SYRACUSE, N. Y.
Entered according to Act of Congress, in the year 1864, by
“ Morse’s Telegraphic Institute “ Association,
In the Clerk’s office of the District Court for the Northern District
of New York.
Has the citation:
73- Compliments to _____ .
Check out more history of numeric shorthand at: