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T7C08:Which instrument can be used to determine SWR?

T7C08T7C

Which instrument can be used to determine SWR?

Direct answer summary (2026-2030 NCVEC pool)

The official correct answer for T7C08 is Directional wattmeter.

The key fact is Directional wattmeter. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.

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More questions in T7C

T7C01What is the primary purpose of a dummy load?T7C02Which of the following is used to determine if an antenna is resonant at the desired operating frequency?T7C03What does a typical RF dummy load consist of?T7C04What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?T7C05Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?T7C06What does an SWR reading of 4:1 indicate?