In this document, the Federal Communications Commission (Commission) revises the Commission’s rules for the 24.25-24.45 GHz and 24.75-25.25 GHz bands (collectively, the 24 GHz band) to implement certain decisions made in the World Radio communication Conference held by the International Telecommunication Union (ITU) in 2019 (WRC-19). Specifically, the Commission aligns part 30 of the Commission’s rules for mobile operations in these frequencies with the Resolution 750 limits adopted at WRC-19 to protect the passive 23.6-24.0 GHz band from unwanted emissions on the timeframes adopted at WRC-19. Effective date: This rule is effective January 13, 2025. 89 Federal Register (FR) 100856, December 13 2024; Title 47 Code of Federal Regulations (CFR) Parts 2 and 30 https://www.govinfo.gov/content/pkg/FR-2024-12-13/html/2024-29313.htm This final rule is identified by ET Docket No. 21-186FCC 24-124. Documents are also accessible from the FCC’s Electronic Document Management System (EDOCS) by searching the ET Docket Number. Comments («filings») posted by the FCC in the Electronic Comment Filing System (ECFS) are accessible at https://www.fcc.gov/ecfs/search/search-filings/results?q=(submissiontype.description:(%22COMMENT%22)+AND+proceedings.name:(%2221-186%22))