On October 13, LightSquared submitted an ex parte filing responding to submissions by Garmin International, Inc., last month that reported on meetings with FCC officials (TRDaily, Sept. 24). In today’s filing in IB docket 11-109, LightSquared complained that “Garmin still wants to determine harmful interference by using a 1 dB rise in the carrier to noise ratio (the ‘1dB proposal’).

Garmin states that to use any other measure ‘would require analyzing many complicated use cases for interference impact.’ This quite simply shows that not even Garmin believes the 1 dB proposal shows actual harmful interference.” LightSquared also reiterated that it “has stated many times in this proceeding that the Commission must evaluate harmful interference according to whether the functioning of a GPS device is actually endangered, meaning that there would be a user-perceptible impact on the position reported by the device. The testing being conducted by Roberson and Associates seeks to show whether operation of wireless broadband near GPS causes any such impact.

Courtesy TRDaily