More Interference for LightSquared's Planned Network
Jun 10, 2011, 7:46 AM by Eric M. Zeman
A new set of government tests has confirmed the results of earlier tests showing that LightSquared's use of L-band spectrum to operate a Long Term Evolution data network does in fact interfere with nearby GPS services. The new test said LightSquared's network disrupted service to all GPS devices in the test area. For example, General Motors indicated that its OnStar service was degraded significantly by LightSquared's network, and the Federal Aviation Administration said that LightSquared's network reduces the functionality of GPS systems used by aircraft to roughly zero when they are flying below 2,000 feet. The Defense Department said LightSquared's network can interfere with military equipment and military aircraft. The Federal Communications Commission gave LightSquared permission to use the L-band spectrum in January pending the results of interference tests. LightSquared and the GPS industry plan a last set of tests next week. LightSquared believes it can adjust its network so that it won't interfere with GPS systems.
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