New uses of the electromagnetic spectrum have given rise to everything from cell phones to phased array radars to satellite radio.

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The trailer-mounted radar is a "phased array" type - it scans the sky with a narrow beam which flicks between thousands of locations each second.

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The agreement contains FS-X technology flow-back guarantees, including U.S. participation in the manufacture and testing of new technology components such as advanced co-cured composite wings, new avionics, and phased-array radar.

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