General exam question G8A02
Subelement G8, SIGNALS AND EMISSIONS· Group G8A
G8A02
What is the name of the process that changes the phase angle of an RF signal to convey information?
- A.Phase convolution
- B.Phase modulation (correct answer)
- C.Phase transformation
- D.Phase inversion
WhyPhase modulation is the process that changes the phase angle of an RF signal to convey information. Shifting an RF signal's phase angle to represent information is called phase modulation, the process behind PSK and related digital modes, answer B. "Phase convolution," "phase transformation," and "phase inversion" aren't the standard terms for this modulation technique.
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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