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GPS is endangered by a misguided FCC decision
- throw0101a 6y agoSpecifically: > GPS is vulnerable to interference from ground-based transmissions, yet last April the FCC unanimously[0] granted an application by Ligado Networks, based in Reston, Va., to offer a ground-based 5G service in spectrum, much of which is next to spectrum allocated for GPS. [0] https://docs.fcc.gov/public/attachments/FCC-20-48A1.pdf https://docs.fcc.gov/public/attachments/FCC-20-48A1.pdf
- posguy 6y agoThe GPS industry has known they needed to use better filtering on their RF frontends since 2001 [1], and in 2004 the FCC approved using adjacent spectrum in terrestrial applications [1]. Adjacent frequency filtering has existed for decades to make GPS receivers that don't listen to adjacent spectrum, but Garmin, Trimble and other GPS industry heavyweights have spent the intervening 20 years putting out cheap hardware with minimal frequency filtering despite knowing it will cause these devices to work poorly as more radio signals are broadcast 1 - https://en.wikipedia.org/wiki/Ligado_Networks#LightSquared_proposals https://en.wikipedia.org/wiki/Ligado_Networks#LightSquared_p...