In Morse code, hams use "hi" to indicate a laugh, and "es" to mean "and".
Where did these abbreviations come from? Both being all dots, they are short and easy to send and easy to recognize, but why these particular abbreviations?
For example, we use "de" instead of "this is" for similar reasons of brevity, but it's easy to see where this one comes from: "de" means "from" in Spanish.
My personal guess for "hi" is that it just sounds funny when you hear it, and almost brings to mind the rhythm of the old phrase "shave and a haircut, two bits. But I could be quite mistaken; there must be more to it than that. And I have no clue where "es" came from.
Would anyone know?
hi hi tks es 73 de WJ6V dit dit