LightSquared–GPS controversy

Overview
On February 14, 2012, the Federal Communications Commission, through a public notice, proposed the revocation of its earlier conditional approval of LightSquared's plan to build a satellite-based national LTE network on the grounds that it would cause unacceptable interference to GPS.

The underlying issue was that the requirements for building the LightSquared network could not be determined in advance, since there were no objective criteria by which the extent of harmful interference could be predicted. The LightSquared network was designed following FCC rulemakings in 2003, 2004 and 2005 that incorporated extensive input from the public and Federal agencies. In particular, the FCC adopted recommendations from the GPS Industry Council and NTIA to protect against harmful emissions from Mobile Satellite Service/Ancillary Terrestrial Components operations intruding into other bands, including the GPS frequency bands.

Source

 * Report to the President: Realizing the Full Potential of Government-held Spectrum to Spur Economic Growth, at 37.