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1 1 (September 23, 2022)

handle is hein.crs/goveixy0001 and id is 1 raw text is: Congressional ____ ~ Research Service National Academies of Sciences, Engineering, and Medicine Report on Ligado Networks and the Interference Debate September 23, 2022 On April 19, 2020, the Federal Communications Commission (FCC) approved an application by Ligado Networks, a U.S. telecommunications company, to deploy a terrestrial network within the United States using specific segments of L-Band spectrum-spectrum typically used for satellite services. Federal agencies including the Departments of Defense (DOD), Homeland Security, and Transportation and several Members of the House and Senate Armed Services committees objected to the decision. They contend loud signals from Ligado's terrestrial transmitters will overpower the reception of soft signals from Global Positioning System (GPS) satellites and other mobile satellite services (MSS), potentially impacting DOD operations near Ligado transmitters in the United States. This was discussed during a May 2020 Senate Armed Services Committee hearing. Some Members of Congress, GPS experts, GPS device manufacturers, the aviation industry, weather organizations, and others also opposed the decision due to interference concerns. The FCC asserts that its decision, which required Ligado to mitigate interference, would enhance U.S. leadership in advanced wireless services and had support from many Members of Congress and Trump Administration officials. National Telecommunications and Information Administration (NTIA) Petitions On May 22, 2020, NTIA filed one petition with the FCC on behalf of the executive branch to stay the order and another petition to reconsider the decision. On January 19, 2021, the FCC declined to stay the order. Congress Mandates Review of FCC Decision The William M. (Mac) Thomberry National Defense Authorization Act for Fiscal Year 2021 (P.L. 116- 283) required, among other things, that DOD enter into an agreement with the National Academies of Sciences, Engineering, and Medicine (NASEM) to conduct an independent technical review of the FCC's decision and to assess its impact on DOD operations. Congressional Research Service https://crsreports.congress.gov IN12023 CRS INSIGHT Prepared for Members and Committees of Congress

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