Which frequency is designated as the Guard Frequency?

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Prepare for the VT-IV Navigation Familiarization Exam II. Master navigation techniques with flashcards and multiple choice questions, with each answer fully explained. Boost your confidence and ace your exam!

Multiple Choice

Which frequency is designated as the Guard Frequency?

Explanation:
Guard frequency is the dedicated emergency channel that’s always monitored so distress calls can be heard and rescue actions coordinated when normal communications fail. The international guard frequency for civil aviation is 121.5 MHz, used specifically for voice distress calls and SAR homing, making it the go-to channel in emergencies. The other frequencies serve navigation or non-emergency communications and aren’t designated for distress: 108 MHz sits in the VOR navigation band, 50 MHz isn’t a standard civil aviation voice channel, and 136.975 MHz is just a regular communication frequency, not the emergency guard.

Guard frequency is the dedicated emergency channel that’s always monitored so distress calls can be heard and rescue actions coordinated when normal communications fail. The international guard frequency for civil aviation is 121.5 MHz, used specifically for voice distress calls and SAR homing, making it the go-to channel in emergencies. The other frequencies serve navigation or non-emergency communications and aren’t designated for distress: 108 MHz sits in the VOR navigation band, 50 MHz isn’t a standard civil aviation voice channel, and 136.975 MHz is just a regular communication frequency, not the emergency guard.

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