Trimble Warns About Ligado Downlink Interference
Ligado's planned use of 1526-1536 MHz for downlinks raises concerns even at the lower power levels the company proposes, since base stations clustered together would have the same aggregate effect as higher power levels, Trimble told aides to FCC Commissioners…
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Mike O'Rielly and Geoffrey Starks, according to an FCC docket 12-340 posting Tuesday. Trimble urged using the 1 dB noise floor metric for evaluating harmful interference, which Ligado resisted (see 1911250038). "Every stakeholder, including Trimble, had four years to express their views and offer technical data to the FCC; the unanimous approval of Ligado’s application is evidence that those arguments were not backed by data, science, and engineering evidence," Ligado emailed. "GPS interests cannot simply stake claim to something that is not, and has never been, theirs to take. We sincerely hope that we can move beyond the rhetoric of late and begin working together to see that this spectrum be put to full use." Commissioners unanimously approved Ligado's L-band terrestrial broadband plan, the agency announced Monday (see 2004200039).