To protect global positioning system (GPS) users from interference, LightSquared LLC announced on Monday that it will initially deploy its nationwide long-term evolution wireless broadband network within a 10 MHz swath of spectrum in the lower L-band that is further from GPS operations than the channels LightSquared had first proposed to use. The disclosure comes a week after the FCC approved Lightsquared’s request to delay until July 1 the filing of a working group report on test results that demonstrate that the company’s wholesale operations in the upper L-band would interfere with adjacent GPS systems. (Officials with LightSquared confirmed this week that the report, due originally on June 15, would be filed with the FCC no later than June 29.) In a press statement, LightSquared said it would commence operations on downlink frequencies in the 1526-1536 MHz band that are controlled by Inmarsat and that are “largely free of interference issues with the exception of a limited number of high precision GPS receivers that are specifically designed to rely on LightSquared’s spectrum.” Under its original contract with Inmarsat, LightSquared had planned to extend its operations into the 1526-1536 MHz band after its first two-to-three years of business growth. According to LightSquared, Inmarsat has agreed to “accelerate the schedule for LightSquared to use the spectrum under its original deployment time line that will allow it to meet its build out deadlines.” With respect to its upper L-band channels that had been the focus of GPS interference concerns, LightSquared said it would “work closely with the FCC and the NTIA as well as the relevant U.S. agencies and commercial GPS users to explore mitigation possibilities and operational alternatives that will allow LightSquared to continue to expand its business.” To “provide additional protection to GPS,” LightSquared also said it would modify its FCC license to reduce by 50% the maximum authorized power of its base station transmitters. Although LightSquared touted its plan as one that “offers a clear path for LightSquared to move forward” while ensuring that “tens of millions of GPS users won’t be affected,” a spokesman for GPS concern Trimble Navigation described that plan as “nothing but a ‘Hail Mary’ move” as LightSquared’s proposed lower L-band operation “still interferes with many critical GPS receivers in addition to the precision receivers that even LightSquared concedes will be affected.”