47 C.F.R. § 27.1131 Protection of Part 101 operations.
Title 47 - Telecommunication
All AWS licensees, prior to initiating operations from any base or fixed station, must coordinate their frequency usage with co-channel and adjacent channel incumbent, Part 101 fixed-point-to-point microwave licensees operating in the 2110–2155 MHz band. Coordination shall be conducted in accordance with the provisions of §24.237 of this chapter.
Title 47: Telecommunication
PART 27—MISCELLANEOUS WIRELESS COMMUNICATIONS SERVICES
Subpart L—1710–1755 MHz, 2110–2155 MHz, 2160–2180 MHz Bands
Protection of Incumbent Operations
§ 27.1131 Protection of Part 101 operations.