Câmbio

Mostly heard in military movies, the expression "roger" or "roger that" is the equilvalent to "câmbio".
"Roger" means "I have received all of the last transmission" in both military- and civilian aviation radio communications. This usage comes from the initial R of received: R was called Roger in then-current radio alphabets such as the Joint Army/Navy Phonetic Alphabet.
"Roger that. Over and out" "Câmbio e desligo"