• § 90.521 - Scope.

• § 90.523 - Eligibility.

• § 90.525 - Administration of interoperability channels.

• § 90.527 - Regional plan requirements.

• § 90.529 - State License.

• § 90.531 - Band plan.

• § 90.532 - Licensing of the 758-769 MHz and 788-799 MHz bands; first responder network authority license and renewal.

• § 90.533 - Transmitting sites near the U.S./Canada or U.S./Mexico border.

• § 90.535 - Modulation and spectrum usage efficiency requirements.

• § 90.537 - Trunking requirement.

• § 90.539 - Frequency stability.

• § 90.541 - Transmitting power and antenna height limits.

• § 90.542 - Broadband transmitting power limits.

• § 90.543 - Emission limitations.

• § 90.547 - Narrowband Interoperability channel capability requirement.

• § 90.548 - Interoperability Technical Standards.

• § 90.549 - Transmitter certification.

• § 90.551 - Construction requirements.

• § 90.553 - Encryption.

• § 90.555 - Information exchange.

• § 90.557 - Secondary fixed signaling operations.

• § 90.559 - Station Identification.