At what point does a SART begin transmitting?

Official USCG Answer & Rule Citation

Correct Answer: Option C — If it has been placed in the "on" position, it will respond when it has been interrogated by a 9-GHz radar signal.

A SART does not continuously radiate power; once manually switched from standby to active, it remains in a receiving state until triggered by an interrogating 9-GHz X-band radar signal.

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