происхождение "Roger (that)" и "Copy".
http://forum.lingvo.ru/actualthread.aspx?tid=25116
иRoger
The use of the word in radio communication to mean "yes, I understand" is attested from 1941, from the U.S. military phonetic alphabet word for the letter -R-, in this case an abbreviation for "received." Said to have been used by the R.A.F. since 1938
http://en.wikipedia.org/wiki/Roger#Phonetics
Radio phraseology
Main article: Voice procedure
"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. It is also often shortened in writing to "rgr". R is Romeo in the modern NATO phonetic alphabet. Contrary to popular belief, Roger does not mean or imply "I will comply". That distinction goes to the contraction wilco (from, "will comply"), which is used exclusively if the speaker intends to say "received and will comply," thus making the phrase "Roger Wilco" both procedurally incorrect and redundant.
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