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People saying "10-4” on the radio when they mean "affirmative" or "yes"
Well since 10-4 is a radio code meaning message received, I think they're saying exactly what they mean.
Things like "Did you guys go for lunch?" and hearing back "10-4". Obviously I know what they mean, it just annoys me.
What does 10-4 really mean then?
I think it's technically supposed to be an acknowledgement that the message was received.
Messaged received / ok / got it
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