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Which of the following frequencies is an international emergency frequency?

  • A

    6500 KHz

  • B

    121.050 MHz

  • C

    121.500 MHz

  • D

    122.500 MHz

121.5 MHz: International Aeronautical Emergency Frequency. This frequency should always be used first. If such frequency does not help, the pilot should use the emergency frequency 243 MHz (NATO Combined Distress and Emergency Frequency).

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