Appendix E
Special-Purpose Frequencies
E-1. Designation
National and international agreements have designated special-purpose frequencies used for maritime distress, search and rescue search, and rescue and for aeronautical distress.
E-2. Frequencies
Aircraft, ship, and survival craft stations may use the following frequencies as long as they follow the ITU RRs.
- 500 kHz Maritime distress and calling
- 2182 kHz Maritime distress and calling
- 3023 kHz Maritime search and rescue
- 4125 kHz Maritime mobile distress (voice)
- 5680 kHz Maritime search and rescue
- 6215.5 kHz Maritime mobile distress (voice)
- 8364 kHz Maritime search and rescue
- 40.5 MHz Distress calling
- 121.5 MHz Aeronautical distress
- 123.1 MHz On-scene search and rescue/auxillary aeronautical (voice)
- 156.8 MHz Maritime distress and calling
- 243 MHz Aeronautical distress
- 401.0 to 406.1 MHz Search and rescue satellite
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