Good news, LightSquared interferes with GPS

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Jun 6, 2006
6,990
currently boatless wishing Harrington Harbor North, MD
This had a lot of folks worried. Seems like they will not be able to launch theri system after all

Washington Post
January 18, 2012
Pg. 14
Another Test Shows LightSquared System Interferes With GPS
Reston company to announce business plans following report
By Cecilia Kang
Federal regulators have renewed charges that the mobile Internet service LightSquared interferes with military and aviation operations, in what experts say is a severe blow to the fledgling business.
The fresh test results, released late last week, had been a last-ditch chance for Reston-based LightSquared to prove that its satellite service was safe. But the results confirmed findings that the network would interfere with key Global Positioning System technology used to steer planes and operate sensitive construction and military equipment.
On Wednesday, the company is slated to announce its business plans in the wake of the report.
Some government officials said the problems didn’t seem fixable.
“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,” wrote Ashton Carter, deputy secretary of defense, and John Porcari, deputy secretary of transportation, in a letter. The officials head the interagency National Space-Based Positioning, Navigation and Timing group.
Their conclusion, after several months of testing, will put off the company’s attempts to gain license approval by the Federal Communications Commission to light up its satellite network and begin selling broadband Internet service that would compete with AT&T, Verizon and T-Mobile.
“There’s no way the FCC will grant that approval after this report,” said Christopher King, an analyst at Stifel Nicolaus. “The question will be, when will they run out of money?”
Indeed, an urgency to resolve interference problems brought Philip Falcone, founder of LightSquared, to Washington on Jan. 4 to meet with FCC staff. At the meeting, the hedge fund billionaire and founder of Harbinger Capital highlighted the company’s extensive investment -- of $3 billion -- in the venture that supports the agency’s goals of extending broadband Internet to more U.S. homes, according to public filings.
The FCC is under investigation by some Republican lawmakers, who question the agency’s decision in early 2011 to grant LightSquared an initial waiver to fast-track its business.
Amid its regulatory headaches, LightSquared has responded with its own offense against federal officials. It has protested the government’s process in testing its network, saying the interagency group’s vice chairman, Brad Parkinson, has a conflict of interest because he serves on the board of GPS maker Trimble, which has lobbied against LightSquared.
“Government testing has become unfair and shrouded from the public eye,” LightSquared said in a news release. “Under an agreement worked out directly between representatives of Trimble -- the same company that has paid for a year-long lobbying campaign against LightSquared’s network -- LightSquared was specifically excluded from the testing process.”
The interagency group and Trimble both failed to respond to requests for comment.
 

KD3PC

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Sep 25, 2008
1,069
boatless rainbow Callao, VA
what is really sad is that this has been on-going for at least two years...quite similar to "broad band internet over power lines" (BPL) a few years back.

and even more so, just because the facts tell us this is not viable, means nothing to the FCC or the NTIA....they have a checkered past with their immovable support of BPL and some other PC technologies that are not viable.

I am waiting for the announcement that this is DEAD, before I celebrate.

It should never have gotten this far in the first place.
 
May 24, 2004
7,215
CC 30 South Florida
Unfortunately in this day and age the credibility of both goverment and corporate America is in issue. They are probably posturing until the real issues, probably of monetary nature, are ironed out. Then everything all of a sudden be proved safe and good to go. Can't believe their expressed intentions but their actions do speak loud and clear.
 

KD3PC

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Sep 25, 2008
1,069
boatless rainbow Callao, VA
http://gigaom.com/broadband/lightsquared-accuses-gps-industry-of-rigging-the-evidence/

LightSquared, not wholly unexpected, in the call today - says the tests are rigged and that they need better testing parameters.

What they don't say is that their waiver was granted for one thing, and then they do something else. Any RF engineer with a clue, could see that there is no way their devices and the GPS world are going to play well together...

At least the FCC does say that they do not intend to lift the restrictions for them to proceed until the interference issues are resolved. They see this as the hot potato it is - SO far so good.
 

JohnS

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Sep 25, 2008
177
Islander (Wayfarer/McGlasson) 32 St Georges Harbor
According to Lightsquared, their service doesn't interfere with GPS. If that were true and tests could prove it, then what possible motivation would GPS manufacturer's have in opposing it?
 

KD3PC

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Sep 25, 2008
1,069
boatless rainbow Callao, VA
According to Lightsquared, their service doesn't interfere with GPS. If that were true and tests could prove it, then what possible motivation would GPS manufacturer's have in opposing it?
according to LS, they admit their service does interfere with GPS, we "only have to add this little filter" to every GPS currently in service.

If you watch their video about the latest test...the lab guy says that the GNSS antenna has been modified ....

part of the problem in taking them seriously about anything is that they do NOT believe a full dB change in signal strength is anything to worry about...which is what their signal does to the nearby GPS antenna...

A third year EE knows that high power transmitted (LS Box) next to an adjacent weak signal receiver (GPS) will render that receiver dead....or worse.

Sadly it appears that this is still up in the air....it is politically so hot, no agency wants to do their JOB and just end it now.
 
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