I researched this a long time ago, and this was the best answer I could find. It was the "WILD WEST". The days of Samuel Morse and the telegraph. Winchester developed a new weapon, which was probably one of the greatest inventions of the times: the Model 1873 repeating rifle. It was a grand invention, and considering the times, the news of it's inventioin spread like wildfire across the nation. Everyone, and I mean everyone wanted one. It was the talk of the town, and of the west. Telegraph operators, in place of wishing each other "a good day" or "good luck" began wishing each other a "73" And, it stuck. 73 de W5CF Rick
73 is an accepted term to indicate signing off or end of transmission.
I've never seen 51's used as a term. It may have siginifance, like 73's does, going back to the telegraph era. 73 has morphed over the telegraph era to become "Best Regards", which is why it's still commonly used.51's is very similar to 73's. It is simply in another language (Latin I believe). When translated back to English the closest translation you get is "wishes". In C.B. radio it started becoming widely used by Single Side Band radio clubs due to a C.B. radio magazine columnist signing off his DX report with 73's and 51's. wishing you "best regards"(73's) and "good DX"(51's). In amateur radio there is a rare German communications guide where it is documented and it means "take care" and don't get caught!(by the "radio police"). That was the closest translation I could get from a German radio operator belonging to a club called the European Radio Group out of Witten, Germany. There is also, from this communications guide the term "55" meaning "lots of success" and "66" meaning God bless!... hope that helps73!
Ham Nation - 2011 CW Sweepstakes Weekend 2-73 was released on: USA: 15 November 2012
listening in to a conversation without participating in it. 73-Chris/N3GAD
32/73
yes a license is required, for example most of the time to be a radio operate you must know the aeronautical alphabet, alpha bravo charlie, to be able to communicate with others. ----------------------------- by GBaughma: For amateur radio, there is a lot that you should know, including FCC regulations, radio theory, electronics, allowed frequencies, and so forth. Being a HAM (Amateur) Radio operator is a lot of fun, and can involve you with the community as well, such as RACES (Radio Amateur Civil Emergency Service) and ARES (Amateur Radio Emergency Service). If all the communications were to go out in the world; no phones, satellites, etc. HAM radio operators could still get messages through. It's an exciting, and gratifying hobby. 73!
73 is a numerical code frequently used by amateur radio operators to express โbest regardsโ or โbest wishes.โ It is derived from the abbreviation โ73sโ used in Morse code.
there's 73, cq and qst
As a fraction: 73/100
12.1667
There are approximately 484 calories per 100 g serving of a ham salad ranch dressing. One tablespoon of ranch dressing contains about 73 calories.
73