Radio Amateur Quiz Canadian License

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Question A-007-009-005

Which of the following statements about waveguide IS NOT correct?

Correct Answer

Waveguide has high loss at high frequencies, but low loss below cutoff frequency

Explanation

This statement is incorrect. Waveguide has very high attenuation (effectively does not propagate) *below* its cutoff frequency. Above cutoff, its loss generally increases with frequency, but is typically lower than coax at very high frequencies.

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