The potential of global positioning system (GPS) devices to receive harmful interference from LightSquared’s planned terrestrial wireless broadband operations in the mobile satellite service (MSS) L-band can be attributed to the failure of the GPS industry to adhere to U.S. Department of Defense (DOD) frequency standards, argued LightSquared in a letter to the FCC last Thursday. Responding to GPS industry claims that LightSquared’s modified plan to commence service in the lower portion of the L-band is not enough to insulate GPS operations from interference, LightSquared executive vice president Jeffrey Carlisle told the FCC that the problem of interference stems from the GPS industry “ignoring” DOD wireless frequency filtering standards that require GPS devices to receive signals exclusively on the frequencies on which they are assigned. Proclaiming, “the GPS industry benefits from an estimated $18 billion taxpayer subsidy to offer a commercial service that is completely dependent on a government satellite system,” Carlisle declared that, “despite the federal handout, they have deliberately ignored [DOD] criteria for using the restricted system.” Notwithstanding the alleged culpability of the GPS industry, Carlisle maintained that his company “remains committed to working in partnership with responsible members of the GPS industry and for the benefit of the public” as “[GPS] devices are crucial to the country’s economy, and we want to work with the GPS industry for a solution.” Meanwhile, a representative of the GPS industry replied: “there never has been, nor will there ever be, a filter that can block out signals in an immediately adjacent frequency band . . . nor has LightSquared put forward any credible, independent expert opinion or other evidence that this is possible.”