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What are the typical operating frequencies for sonic tracking?

(a) 50 MHz to 100 MHz

(b) 50 Hz to 100 Hz

(c) 50 kHz to 100 kHz

(d) 50 mHz to 100 mHz

This question was addressed to me in final exam.

This is a very interesting question from Cockpit Overview topic in section Cockpit Overview of Aircraft Maintenance

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Correct option is (c) 50 kHz to 100 kHz

Best explanation: The typical operating frequencies for sonic tracking are in the 50 kHz to 100 kHz range. These can be made to carry audio sound information directly to the pilot’s ears by means of subcarrier modulation.

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