Most Read: Business

 Last Update: 10:26 AM 04/28/2015(NASDAQ&DJIA)

World Markets from      


Other Market Data from      


Key Rates from      


Blog Contributors

Timothy B. Lee

Timothy B. Lee

Timothy B. Lee covers technology policy, including copyright and patent law, telecom regulation, privacy, and free speech. He also writes about the economics of technology. He has previously written for Ars Technica and Forbes. You can follow him on Twitter or send him email.

Brian Fung

Brian Fung

Brian Fung covers technology for The Washington Post, focusing on electronic privacy, national security, digital politics and the Internet that binds it all together. He was previously the technology correspondent for National Journal and an associate editor at the Atlantic. His writing has also appeared in Foreign Policy, Talking Points Memo, the American Prospect and Nonprofit Quarterly. Follow Brian on Google+ .

Andrea Peterson

Andrea Peterson

Andrea Peterson covers technology policy for The Washington Post, with an emphasis on cybersecurity, consumer privacy, transparency, surveillance and open government. She also delves into the societal impacts of technology access and how innovation is intertwined with cultural development.

Post Tech
About / Where's Post I.T.?   |    Twitter  |   On Facebook  |  RSS RSS Feed  |  E-Mail Cecilia
Posted at 10:36 PM ET, 12/14/2011

Federal officials: More tests show LightSquared interference with GPS, aviation

Federal officials said Wednesday that LightSquared’s proposed mobile satellite network would interfere with “the majority” of global positioning system receivers and pose dangerous disruption to airline safety systems.

The findings, announced after testing by aviation and defense agencies and other federal officials, added to troubles faced by Reston-based LightSquared, a satellite-based high-speed mobile Internet company backed by Harbinger Capital Partners.

LightSquared has fought over the past year to overcome concerns by military and other government officials that its network would knock out global positioning systems. The Securities and Exchange Commission has informed Harbinger and its founder, hedge fund mogul Philip Falcone, that they could be charged with securities fraud, according to a Friday regulatory filing.

Battling to save its satellite business, LightSquared agreed to use a different portion of satellite spectrum, further away from GPS units. Government officials conducted tests under the new plan and found the network would not significantly interfere with cellular phones.

However, signals would cause “harmful interference to the majority of other tested general purpose GPS receivers,” and separate tests showed “interference with a flight safety system designed to warn pilots of approaching terrain,” according to a statement Wednesday by Anthony Russo, director of the National Coordination Office for Space-Based Positioning, Navigation and Timing.

LightSquared disagreed with some of the findings.

LightSquared CEO Sanjiv Ahuja said the satellite firm will work with the Federal Aviation Authority to resolve interference issues.

But “we profoundly disagree with the conclusions drawn with respect to general navigation devices,” he said in a statement. He blamed GPS interference on GPS devices and not on the company’s proposed network.

“We have taken extraordinary measures — and at extraordinary expense — to solve a problem that is not of our making,” Ahuja said.

The company’s proposed plan to bring 4G mobile Internet connections to the nation has been hailed by the Federal Communications Commission as a way to bring more competition to the wireless market.

But the company’s plan soon ran into trouble when tests by the company and GPS makers concluded that the network would interfere with technology used by everyone from fighter pilots to minivan drivers.

GPS firms and Republican lawmakers have criticized the FCC for granting LightSquared a key permission that would let it transform its network from satellite-only phones to mainstream smartphones.


Democrats call for investigation into bankrupt Open Range

LightSquared, FCC face criticism from GOP lawmakers

By  |  10:36 PM ET, 12/14/2011

Read what others are saying

    © 2011 The Washington Post Company