Radio Amateur Quiz Canadian License

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Question A-002-012-005

Resonant cavities are used by amateurs as a:

Correct Answer

narrow bandpass filter at VHF and higher frequencies

Explanation

Resonant cavities act as high-Q tuned circuits at VHF, UHF, and microwave frequencies, making them suitable for use as very selective narrow bandpass filters, such as in duplexers.

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