Federal Communications CommissionDA 25-1060 PUBLIC NOTICE Federal Communications Commission 45 L Street NE Washington, DC 20554 News Media Information: 202-418-0500 Internet: www.fcc.gov TTY: 888-835-5322 DA 25-1060 Released: December 16, 2025 SPACE BUREAU EXTENDS COMMENT AND REPLY COMMENT DEADLINES FOR NOTICE OF PROPOSED RULEMAKING REGARDING FACILITATING MORE INTENSIVE USE OF UPPER MICROWAVE SPECTRUM SB Docket No. 25-305 Extended Comment Deadline: January 20, 2026 Extended Reply Comment Deadline: February 18, 2026 By this Public Notice, the Space Bureau extends the deadlines for filing comments and reply comments in the above-captioned proceeding to January 20, 2026 and February 18, 2026, respectively. On October 29, 2025, the Commission released a Notice of Proposed Rulemaking (UMFUS Notice) seeking comment on section 25.136 47 CFR § 25.136. of the Commission’s rules, which governs spectrum sharing between the terrestrial Upper Microwave Flexible Use Service and the Fixed Satellite Service. Facilitating More Intensive Use of Upper Microwave Spectrum, SB Docket No. 25-305, Notice of Proposed Rulemaking, FCC 25-70 (Oct. 29, 2025). The UMFUS Notice specified that comments and reply comments would be due 30 and 45 days after Federal Register publication. Id. at 1. That publication occurred on December 3, 2025, announcing a comment filing deadline of January 2, 2026 and a reply comment date of February 2, 2026. Federal Communications Commission, Facilitating More Intensive Use of Upper Microwave Spectrum, Proposed Rule, 90 Fed. Reg. 55702 (Dec. 3, 2025). On December 11, 2025, CTIA requested extension of the comment and reply comment filing deadlines until January 20, 2026 and February 18, 2026. Motion for Extension of Time to File Comments and Reply Comments of CTIA, SB Docket No. 25-305 (filed Dec. 11, 2025) (CTIA Motion). In its request, CTIA begins by noting that the issues in the UMFUS Notice are complex and intersect with proposals contained in the simultaneously-adopted Notice of Proposed Rulemaking addressing Space Modernization (Modernization Notice), Space Modernization for the 21st Century, SB Docket No. 25-306, Notice of Proposed Rulemaking, FCC 25-69 (Oct. 29, 2025). which has a comment deadline of January 20, 2026 and a reply comment deadline is February 18, 2026. See CTIA Motion at 1-3; Federal Communications Commission, Space Modernization for the 21st Century, Proposed Rule, 90 Fed. Reg. 56338 (Dec. 5, 2025). CTIA argues that that alignment of the pleading cycles for the UMFUS Notice and the Modernization Notice would allow commenters to provide integrated, consistent, and nonduplicative analyses in both proceedings, as well as a more fulsome record for the Commission to review. CTIA Motion at 2-3. CTIA also argues that the brief extension requested would not harm any other party in this proceeding, alter any substantive rights, or prejudice any participant. Id. at 3. Finally, CTIA states that the requested deadline changes—extending the comment window by less than three weeks and the reply comment window by just over two weeks—would not cause significant delay or impede Commission consideration or timelines, as the new dates align with already-established dates for the Modernization Notice. Id. As set forth in section 1.46(a) of the Commission’s rules, 47 CFR § 1.46(a). the Commission’s policy is that extensions of time shall not be routinely granted. We find, however, that CTIA has provided sufficient justification to warrant grant of their requested extension. An extension would enable interested parties to present more complete comments to the Commission, and we agree with the CTIA that the extension should not disadvantage any party or cause significant delay in the resolution of this proceeding. Although we recognize that there may be some overlap between this docket and the Space Modernization for the 21st Century docket, we remind commenters that, as noted in both Notices of Proposed Rulemaking, neither docket is incorporated into the other, and we do not invite comment or re-opening any of the inquires in either proceeding into the other. As such, commenters are reminded that they must file their comments in the appropriate dockets. For additional information on this proceeding, contact Jake Riehm, Associate Division Chief, Industry Analysis Division, Media Bureau, on detail to the Space Bureau, at 202-418-2166 or by email to Jake.Riehm@fcc.gov or Kerry Murray, Deputy Chief and Chief of Staff, Space Bureau at 202-418-0734 or by e-mail to Kerry.Murray@fcc.gov. - FCC - 2