All my argueying was just for fun.
However, let me tell you all something else.
After a quick search on the web with the query “meanning of 73 in morse” but written in Spanish, I got this, which I’m sure Andy MM0FMF will love:
Which means: taken from QST, october 1954, page 57…
This is in the following site:
Here you’ll find an interesting explanation of where the term 73 and many others come from.
It’s said there that 73 means “my compliments”, rather ‘regards’ today.
It’s all written in Spanish but there are the equivalent English expressions.
During a professional telegraphists convention held back in 1859, it was elaborated a numerical code from 1 to 92 assigning numbers to different commonly used expressions in order to save time when transmitting messages in morse code.
These were some in use back in 1905:
I’m pretty sure you will find this explanations in English somewhere in the web.
I hope you’ll find this interesting.
Notice I was always signing off my messages as Best 73 de Guru and I have just learnt in the mentionned site that ‘de’ stands for ‘This is’ so saying ‘Best 73 this is Guru’ doesn’t make much sense to me.
I thought it made sense before because ‘de’ in Spanish means ‘of’ and also ‘from’ so it made perfect sense to me saying ‘Best 73 de Guru’ meanning 'Best regards from Guru’
From now on I may sign off as ‘Best 73 fm Guru’
Well, sorry for having drifted so much off the original topic…