General exam question G8B05
Subelement G8, SIGNALS AND EMISSIONS· Group G8B
Which intermodulation products are closest to the original signal frequencies?
- A.Second harmonics
- B.Even-order
- C.Odd-order (correct answer)
- D.Intercept point
WhyOdd-order intermodulation products are closest in frequency to the original signal frequencies. Odd-order intermodulation products, particularly third-order ones, fall closest in frequency to the two original signals that created them, which is exactly why they're the hardest to filter out and the most troublesome in practice, answer C. Second harmonics and other even-order products land farther away in frequency, and "intercept point" is a performance metric describing where these products would theoretically equal the fundamental in power, not a type of product itself, so A, B, and D are wrong.
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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