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Helpful resources references. Global projects technologies assessments policies and more browse ourLIBRARY Advocating for policies and systems to protect satellites signals and users We need signals from space terrestrial broadcast and fiber US DOT 2021 TheRNTFoundationisapublicbenefitscientificandeducationalcharity501c3 How GPS is used byalmost every technology Where GPS wasjammed yesterday Where GPS is beingspoofed right now Read our policy recommendations Protect the Frequencies By preventing interference Toughen Receivers With readily available technology Augment Services With difficult to disrupt terrestrial signals What to do. Some recommendations. National PNT Advisory Board Recommendations RNT Foundation Recent Recommendations eNewsletter Archives See all previous eNewsletters From Our Blog FCC asks about PNT alternatives Comments due 28 April 2025 Mar 31 2025 Image FCC Chairman Carr at recent meeting Whats new The Federal Communications Commission FCC has issued a Notice of Inquiry NOI seeking a vast amount of information about positioning navigation and timing PNT policies and systems from the public.