LightSquared Threatens Legal Action against FCC

Flying Magazine ^ | 10/7/11 | Pope

[RonF]

Fair enough. If they bought the rights to use a band with power restrictions and intend to violate the restrictions then they should fail.

[pabianice]

Last year, Obama shut-off LORAN, a very good and very inexpensive system for supplying fixes to aircraft, boats, and civilians. Stated purpose: to save $135M over the next four years.” What a liar. To “save” .0000206% of the budget. Right. I and others warned that relying solely upon GPS was a big mistake. Looks like we were right. The FAA is, by the way, wagging its tail for Master Obama and slowly decommissioning existing aircraft navigation based upon NDB/VOR/ILS. This will, of course, make LightSquared’s system the only one available for such navigation — a privately owned company. This scandal makes Gun Walker look small.

[mikey_hates_everything]

If LightSquared is correct about GPS receivers, does their supposed right to that part of the spectrum trump the greater good?

[backwoods-engineer]

As an RF engineer: Lightsquared is correct; GPS receiver designers have left off front-end filters that would remove signals from adjacent frequency bands, because those bands were unpopulated, and because such filters cost money. Once the Fedgov started selling off adjacent spectrum, that assumption no longer held.

However, with millions of GPS receivers in the field that have these problems, the least LightSquared could do is conduct research into techniques (beamforming, DSSS, etc.) that would minimize interference on public highways and near airports.

[Nachum]

Thanks for the headsup Army Air Corps

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