The results released Friday by a federal working group come amid mounting concern that LightSquared's planned network could cripple GPS systems embedded throughout the nation's infrastructure, some of which are critical to national defense.
"LightSquared's network could cause devastating interference to all different kinds of GPS receivers," said Jim Kirkland, vice president and general counsel of Trimble Navigation Ltd., which makes GPS systems.
In January the Federal Communications Commission gave LightSquared approval to build a nationwide fourth-generation wireless network that would compete with super-fast systems being rolled out by AT&T and Verizon. The new network will wholesale access to other companies that will rebrand the service under their own names. It would cover at least 92 percent of the U.S. by 2015.
The FCC sees the LightSquared network as one part of a broad government push to bring high-speed Internet connections to all Americans.
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