Investors filed a $1.9 billion lawsuit against three GPS receiver manufacturers, including Garmin International, over LightSquared, a now bankrupt company that still hopes to build a wireless broadband network across the United States.

The investors, led by Harbinger Capital Partners, are seeking compensation for losses incurred when the Federal Communications Commission denied LightSquared permission to build a wholesale mobile satellite communications network.

The suit, filed Friday, alleges that Garmin International, Deere & Co. and Trimble Navigation, plus the U.S. GPS Industry Council and the Coalition to Save Our GPS, are liable for failing to warn investors about the problems that have forced a halt to the project.

The filing argues that GPS manufacturers knew of plans to use the frequencies in question for a ground-based network, but did not tell the investors the network would overload receivers, irreparably hampering GPS service, according to a report by Inside GNSS, which reports on the communications industry.

The plaintiffs also argue that GPS manufacturers were effectively designing their devices to improperly use spectrum owned by LightSquared — creating a problem with no practical solution once thousands of legacy GPS receivers were in place, according to the report.

Had they been informed of these problems, the plaintiffs argue, they “never would have incurred these costs or made their subsequent investments in the new network.”

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