47 C.F.R. § 80.707 Cooperative use of frequency assignments.
Title 47 - Telecommunication
(a) Only one Alaska-public fixed station will be authorized to serve any area whose point-to-point communication needs can be adequately served by a single radio communication facility. (b) Each radio channel authorized for use by an Alaska-private fixed station is available on a shared basis only. All station licensees must cooperate in the use of their respective frequency assignments to minimize interference.
Title 47: Telecommunication
PART 80—STATIONS IN THE MARITIME SERVICES
Subpart O—Alaska Fixed Stations
§ 80.707 Cooperative use of frequency assignments.

