For each US 4-character (2x1 or 1x2) call sign sent with 8x character spacing (aka Farnsworth timing), try to head-copy it. First, the call sign is sent in Morse code. Then it is spoken. And finally, it is sent again in More code. If you missed it the first time it was sent, the second time allows you an opportunity to learn the words.
73 de AD0WE!
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