WASHINGTON — LightSquared is charging “bias and inappropriate collusion” following the latest round of U.S. government testing that showed the company’s revised operating plan for its hybrid satellite-terrestrial broadband network serving North America will cause harmful interference to GPS applications.

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Warren Ferster is the Editor-in-Chief of SpaceNews and is responsible for all the news and editorial coverage in the weekly newspaper, the spacenews.com Web site and variety of specialty publications such as show dailies. He manages a staff of seven reporters...