from the PhoneDog blog:
By Alex Wagner January 14, 2012 9PM
LightSquared's been running into some issues with its plans to build out a 4G LTE network that's integrated with satellite spectrum for some time now, as there are concerns that it could cause interference with GPS systems. Recently LightSquared hit perhaps its biggest stumbling block yet, as a group of nine federal agencies known as the National Space-Based Positioning, Navigation and Timing Executive Committee have unanimously decided that both the company's original and revised plans for its LTE network would interfere with many GPS receivers. The group added that it believes that there aren't any practical solutions that'd allow LightSquared to operate its network without GPS interference any time in the next few years, so as of now it's not planning to do any additional testing on LightSquared's network.