StacksVerified U.S. regulatory reference

47 CFR §87.241

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)121.500 MHz: emergency and distress only;
  2. (b)122.850 or 122.900 MHz;
  3. (c)122.925 MHz: available for assignment to communicate with aircraft when coordinating foresty management and fire suppression, fish and game management and protection, and environmental monitoring and protection.