47 C.F.R. § 300.1
(b) The material listed in this paragraph (b) is incorporated by reference into this section with approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. All approved incorporation by reference (IBR) material is available for inspection at National Telecommunications and Information Administration (NTIA) and the National Archives and Records Administration (NARA). Contact NTIA at: National Telecommunications and Information Administration, Office of Spectrum Management, 1401 Constitution Avenue NW, Room 1087, Washington, DC 20230, telephone: (202) 482-1670. For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email fr.inspection@nara.gov. The material is available from: Commerce Department, National Telecommunications and Information Administration, Office of Spectrum Management, 1401 Constitution Avenue NW, Washington, DC 20230, https://ntia.gov/publications/redbook-manual; and Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402, https://bookstore.gpo.gov/ (reference Catalog Number 903-008-00000-8).
[83 FR 28161, June 18, 2018, as amended at 87 FR 2730, Jan. 19, 2022; 88 FR 13176, Mar. 6, 2023; 88 FR 80995, Nov. 21, 2023]