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Huh, I'd forgotten about the letters/numbers CB "call signs".
Your mentioning them somehow has me remembering WWV:
It was interesting back when because although it sounded utterly the same at first listen, there were nuances to what it broadcast. They probably had meaning/significance that I never knew (or knew and forgot..), but I only knew of them "auditorially".
And FWIW, it was a bit jarring to see my high school graduation year in a Midnight Pub post.... >_<