• Subpart A [§ 90.1 - § 90.7] - Subpart A—General Information

• Subpart B [§ 90.15 - § 90.25] - Subpart B—Public Safety Radio Pool

• Subpart C [§ 90.31 - § 90.35] - Subpart C—Industrial/Business Radio Pool

• Subpart D - Subparts D-E [Reserved]

• Subpart F [§ 90.101 - § 90.103] - Subpart F—Radiolocation Service

• Subpart G [§ 90.111 - § 90.169] - Subpart G—Applications and Authorizations

• Subpart H [§ 90.171 - § 90.187] - Subpart H—Policies Governing the Assignment of Frequencies

• Subpart I [§ 90.201 - § 90.223] - Subpart I—General Technical Standards

• Subpart J [§ 90.231 - § 90.250] - Subpart J—Non-Voice and Other Specialized Operations

• Subpart K [§ 90.251 - § 90.283] - Subpart K—Standards for Special Frequencies or Frequency Bands

• Subpart L [§ 90.301 - § 90.317] - Subpart L—Authorization in the Band 470-512 MHz (UHF-TV Sharing)

• Subpart M [§ 90.350 - § 90.395] - Subpart M—Intelligent Transportation Systems Radio Service

• Subpart N [§ 90.401 - § 90.447] - Subpart N—Operating Requirements

• Subpart O [§ 90.460 - § 90.483] - Subpart O—Transmitter Control

• Subpart P [§ 90.490 - § 90.494] - Subpart P—Paging Operations

• Subpart Q - Subpart Q [Reserved]

• Subpart R [§ 90.521 - § 90.559] - Subpart R—Regulations Governing the Licensing and Use of Frequencies in the 763-775 and 793-805 MHz Bands

• Subpart S [§ 90.601 - § 90.699] - Subpart S—Regulations Governing Licensing and Use of Frequencies in the 806-824, 851-869, 896-901, and 935-940 MHz Bands

• Subpart T [§ 90.701 - § 90.771] - Subpart T—Regulations Governing Licensing and Use of Frequencies in the 220-222 MHz Band

• Subpart U [§ 90.801 - § 90.815] - Subpart U—Competitive Bidding Procedures for 900 MHz Specialized Mobile Radio Service

• Subpart V [§ 90.901 - § 90.913] - Subpart V—Competitive Bidding Procedures for 800 MHz Specialized Mobile Radio Service

• Subpart W [§ 90.1001 - § 90.1025] - Subpart W—Competitive Bidding Procedures for the 220 MHz Service

• Subpart X [§ 90.1101 - § 90.1103] - Subpart X—Competitive Bidding Procedures for Location and Monitoring Service

• Subpart Y [§ 90.1201 - § 90.1217] - Subpart Y—Regulations Governing Licensing and Use of Frequencies in the 4940-4990 MHz Band

• Subpart Z [§ 90.1301 - § 90.1338] - Subpart Z—Wireless Broadband Services in the 3650-3700 MHz Band