U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 47Chapter IPart 90Subpart K - Subpart K—Standards for Special Frequencies or Frequency Bands
§ 90.251 - Scope.
§ 90.253 - Use of frequency 5167.5 kHz.
§ 90.255 - [Reserved]
§ 90.257 - Assignment and use of frequencies in the band 72-76 MHz.
§ 90.259 - Assignment and use of frequencies in the bands 216-220 MHz and 1427-1432 MHz.
§ 90.261 - Assignment and use of the frequencies in the band 450-470 MHz for fixed operations.
§ 90.263 - Substitution of frequencies below 25 MHz.
§ 90.264 - Disaster communications between 2 and 10 MHz.
§ 90.265 - Assignment and use of frequencies in the bands allocated for Federal use.
§ 90.266 - Long distance communications on frequencies below 25 MHz.
§ 90.267 - Assignment and use of frequencies in the 450-470 MHz band for low power use.
§ 90.269 - Use of frequencies for self-powered vehicle detectors.
§ 90.273 - Availability and use of frequencies in the 421-430 MHz band.
§ 90.275 - Selection and assignment of frequencies in the 421-430 MHz band.
§ 90.279 - Power limitations applicable to the 421-430 MHz band.
§ 90.281 - Restrictions on operational fixed stations in the 421-430 MHz band.
§ 90.283 - [Reserved]
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