General exam question G4E07
Subelement G4, AMATEUR RADIO PRACTICES· Group G4E
Which of the following may cause receive interference to an HF transceiver installed in a vehicle?
- A.The battery charging system
- B.The fuel delivery system
- C.The control computers
- D.All these choices are correct (correct answer)
WhyA vehicle's battery charging system, fuel delivery system, and control computers can all cause receive interference to an HF transceiver installed in that vehicle. A vehicle's battery charging system, fuel delivery system, and onboard control computers can all generate electrical noise that couples into a mobile HF receiver, so all of these are legitimate sources of receive interference, answer D. Since each of A, B, and C is individually a real potential noise source rather than the sole one, the complete answer is that all of them can contribute.
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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