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Washington View: The Latest on Ligado

A Congressionally-mandated independent technical review from the National Academies of Sciences, Engineering, and Medicine (NASEM) recently found that Ligado Networks’ low-power terrestrial mobile satellite services (MSS) in the L-band may not harm most commercial uses but will, in fact, interfere with GPS for high precision receivers, Department of Defense (DoD) missions and downlinks from Iridium satellite terminals.

To pile on, mitigation measures may not be practical “at operationally relevant time scales or at reasonable cost.” The NASEM report also suggested FCC tighten up its receiver standards and spectrum-related proceedings in the future. Let’s review the bidding.

Topics: GNSS, Ligado, mobile satellite systems, Department of Defense, near-band interference, GPS, FCC, scientific report

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