General exam question G8A03
Subelement G8, SIGNALS AND EMISSIONS· Group G8A
What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?
- A.Frequency convolution
- B.Frequency transformation
- C.Frequency conversion
- D.Frequency modulation (correct answer)
WhyFrequency modulation is the process that changes the instantaneous frequency of an RF wave to convey information. Varying an RF wave's instantaneous frequency to carry information is called frequency modulation, answer D. "Frequency convolution" and "frequency transformation" aren't standard modulation terms, and frequency conversion describes shifting a signal to a different frequency in a receiver or transmitter chain, not encoding information onto it.
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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