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LightSquared says it’s wholesale LTE service is still on track to launch by the end of 2011, reports Light Reading, despite renewed interest from some government bodies and GPS industry about the potential for interference to GPS receivers from the new network.

The 1.6GHz L-Band that Lightsquared intents to use for terrestrial towers sits adjacent to frequencies used by GPS and will cause interference to its operation, claim some GPS companies.

The FCC spectrum task force declared that the 1.6 GHz or “L-band,” mobile-satellite service (MSS) operators with satellite systems that utilize code division multiple access (CDMA) and time division multiple access (TDMA) technologies can share 3.1 megahertz of spectrum at 1618.25-1621.35 MHz. Their January, 2011 Report and Order (pdf) allowed Lightsquared to use the satellite spectrum for terrestrial use.

The Coalition to Save Our GPS says LightSquared’s ground-based radio signals would be one billion times more powerful as received on earth than GPS’s low-powered satellite-based signals, potentially causing severe interference impacting millions of GPS receivers.

The FCC has mandated that LightSquared works with the United States GPS Industry Council (USGIC) to form a technical working group to report back on any interference issues discovered and fixes required. The initial report has been filed, with another due on April 15. The FCC wants the final report by June 15.

LightSquared plans to build out its hybrid LTE terrestrial and satellite network using L-Band spectrum. In return for the use the 1.6GHz spectrum, the Federal Communications Commission (FCC) has mandated that the operator must cover 100 million Americans by the end of 2012, 145 million by the end of 2013, and 250 million by the end of 2015. LightSquared says it will build out 40,000 base stations to cover 92 percent of the US population with an LTE network by 2015.

Harbinger says it can use up to 59MHz of satellite spectrum for terrestrial telephony. It plans to sell capacity on their terrestrial network on a wholesale basis to other fixed or mobile service providers, retailers, device manufacturers, and content providers.

Related DailyWireless Space and Satellite News includes; Time Warner Cable + Lightstream?, Lightsquared Signs Cricket Wireless, Another Rumor: Lightsquared + Sprint?, Lightsquared + Sprint?, Charlie’s Big Play, LTE Spectrum: It’s War, Lightsquared: What GPS Interference?, Harbinger Sells Inmarsat Shares, FCC Green Lights Lightsquared, T-Mobile: No Spectrum Deal…Yet, LightSquared: In Trouble?, Lightsquared Unfurled, MetroPCS Eyes TerreStar

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