A federal executive committee has reported to the Federal Communications Commission that a proposed national, hybrid satellite and terrestrial broadband network to leverage repurposed satellite spectrum cannot work without significant disruption to existing global positioning system devices.
In a Jan. 13 letter, the National Space-Based Positioning, Navigation and Timing Executive Committee, which was asked to evaluate proposals for the network offered by LightSquared LTE, said, "Based upon this testing and analysis, there appear to be no practical solutions or mitigations that would permit the LightSquared broadband service, as proposed, to operate in the next few months or years without significantly interfering with GPS."