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| Wikipedia: Radio http://en.wikipedia.org/wiki/Radio User-generated article on the technology of radio including invention, history, and the use of radio waves for video, telephony, navigation, and radar. - (Read more) |
| Radio Waves http://imagers.gsfc.nasa.gov/ems/radio.html Article discusses the basic concepts of radio waves, and the science sending and receiving radio signals. - (Read more) |
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