The problem is the spectrum LightSquared wants to use is too close to GPS. They were licensed for one limited application of that spectrum and are now trying to shift to another much higher power application and they don't give a damn if nearby communication is harmed.

Here's a couple of technical articles on the results of testing LightSquared vs. GPS. http://www.insidegnss.com/node/2630 http://www.pcmag.com/article2/0,2817,2389264,00.asp

"A report prepared by the Federal Aviation Administration's Navigation Services division essentially attributes 794 deaths and over $72 billion in additional costs to U.S. taxpayers if the LightSquared LTE system is implemented."