General exam question G8B04
Subelement G8, SIGNALS AND EMISSIONS· Group G8B
What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?
- A.Mixer
- B.Reactance modulator
- C.Balanced converter
- D.Multiplier (correct answer)
WhyA multiplier stage generates a harmonic of a lower frequency signal to reach a VHF FM transmitter's desired operating frequency. A frequency multiplier stage deliberately runs a lower-frequency signal through a nonlinear circuit to generate and select one of its harmonics, stepping the frequency up to reach the transmitter's final desired operating frequency, answer D. A mixer combines two different signals rather than generating harmonics of one, a reactance modulator applies phase/frequency modulation rather than multiplying frequency, and "balanced converter" isn't a standard stage name for this function, so A, B, and C 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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