What is the UHF guard frequency?

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Multiple Choice

What is the UHF guard frequency?

Explanation:
Guard frequencies are dedicated channels set aside for emergency communications when normal links aren’t working, so responders can be reached reliably. In the UHF aviation band, the standard guard frequency is 243.0 MHz. That makes 243.0 MHz the official UHF guard channel, used to ensure there’s a reliable emergency path across UHF operations. The other numbers listed aren’t designated as the UHF guard frequency, so they aren’t the correct choice.

Guard frequencies are dedicated channels set aside for emergency communications when normal links aren’t working, so responders can be reached reliably. In the UHF aviation band, the standard guard frequency is 243.0 MHz. That makes 243.0 MHz the official UHF guard channel, used to ensure there’s a reliable emergency path across UHF operations. The other numbers listed aren’t designated as the UHF guard frequency, so they aren’t the correct choice.

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