General exam question G8B02
Subelement G8, SIGNALS AND EMISSIONS· Group G8B
What is the term for interference from a signal at twice the IF frequency from the desired signal?
- A.Quadrature response
- B.Image response (correct answer)
- C.Mixer interference
- D.Intermediate interference
WhyImage response is the term for interference from a signal at twice the IF frequency from the desired signal. A signal sitting exactly two IF's away from the desired frequency mixes down to the same IF as the wanted signal and interferes right alongside it, a problem called image response, answer B. "Quadrature response," "mixer interference," and "intermediate interference" aren't the standard terms for this specific two-IF-offset interference mechanism.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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