121.50 - International aeronautical emergency frequency
162.40
162.425
162.45
162.475
162.50
162.525
162.55
163.275
243.00: Military aviation emergencies.
259.70: Space Shuttle during re-entry and landing.
296.80: Space Shuttle during re-entry and landing.
311.00: In-flight channel used by the U.S. Air Force.
317.70: U.S. Coast Guard aviation.
317.80: U.S. Coast Guard aviation.
319.40: In-flight channel used by the U.S. Air Force
340.20: U.S. Navy aviators.