The U.S. National Space-Based Positioning Navigation and Timing Committee (PNT) has unanimously drawn the conclusion that the LightSquared network and Global Positioning System cannot co-exist, without involving potentially harmful consequences.
According to the committee, the use of LightSquared network could eventually "cause harmful interference to many GPS receivers", Rotor reports. Apart from that, the committee members also suggested that LightSquared could also prove to be harmful for the GPS-powered Ground Proximity Warning System (GPWS).
"Based upon analysis, 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," PNT noted, according to the Rotor article.
Needless to say, the report submitted by PNT eventually put the FCC under immense pressure to withdraw the license granted to LightSquared, approximately 7 years back in 2005.
The primary motive behind LightSquared was to facilitate a unified satellite/ground communication network, involving an unlimited number of ground towers.
The PNT committee was comprised of representatives from both the Air Force, as well as the Commerce Department.