LightSquared blames GPS makers for network problems

LightSquared blamed the makers of global positioning system devices for interference problems between their products and the company's broadband network in a letter sent to the Federal Communications Commission.

Jeffrey Carlisle, LightSquared's vice president for regulatory affairs and public policy, accused the GPS industry of ignoring Defense Department and international standards. “Had the GPS industry complied with DoD’s recommended filtering standards for GPS receivers, there would be no issue with LightSquared’s operations in the lower portion of its downlink band,” Carlisle wrote. He also said GPS makers ignored the receiver design recommendations of a United Nations agency that sets international standards for radio and satellite spectrum.