Its Orwellian-named Active Denial high-power microwave system is meant to control street rioters and repel foes on the run.

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So far, new lines have been laid to serve 100, 000 households, about a tenth of the number the microwave system can currently reach.

CNN: BUSINESS

It launched the service in public housing estates, using a microwave system that could be installed quickly but carries only a limited number of channels.

CNN: BUSINESS

For example, the FAA blew several billion dollars on a Microwave Landing System that the airlines had rightly warned was no advance at all.

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The Swiss system, developed by Fela, and the Austrian system, developed by Italy's Autostrade, are microwave-based, and relatively cheap.

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Instead of jamming electrons through wire, generators convert them to microwave signals and fling these along the surface of the earth, between a system of relays spaced about 20 or 30 miles apart.

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Patriot missile components including advanced radar waveguides, microwave devices, high-speed analog to digital converters, microprocessors, precision gimbals for the missile-seeker system, highly miniaturized radio frequency communications, on-board sensors, advanced signal-processing systems.

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