The Straight Dope on the birth of Roger

[mikea]

Why in radio parlance do they say "roger"? I've asked U.S. Air Force maintenance personnel who know everything about radio from FM to satellites but not the history of "roger." Could you please enlighten me? —shakytom

http://www.straightdope.com/mailbag/mroger.htm

 

[ScottM]

I double dare you to say "romeo" the next time ATC tells you to do something.

 

[AuntPeggy]

A little more information from 5 years earlier:
http://www.worldwidewords.org/qa/qa-rog1.htm