Print Page Updating the Future of GPS  First, let me update the
re-testing of GPS receivers for interference rejection. This was
required by the FCC because the first tests in May 2011 showed
many GPS receivers of all kinds were jammed by two 5 MHz wide
LTE signals (1526–1531 MHz, at the lower end on the MSS band,
and 1545–1550 MHz near the upper end of the MSS band). The MSS
band is adjacent to the GPS downlink band: 1560–1610 MHz.
LightSquared then proposed they could use one 10 MHz wide LTE
signal, 1526-1536 MHz, initially without causing any
interference to the millions of GPS receivers in use.  So the
FCC gave them another chance. It required re-testing to be
completed by Nov. 30. The test data has been delivered to the
National Positioning, Navigation, and Timing Executive Committee
(ExCom, for short), which issued a report noting that there was
significant interference to GPS. The report went to the NTIA,
which is still studying it. LightSquared claims these tests were
biased against it and called for