General exam question G3C06
Subelement G3, RADIO WAVE PROPAGATION· Group G3C
G3C06
What is a characteristic of HF scatter?
- A.Phone signals have high intelligibility
- B.Signals have a fluttering sound (correct answer)
- C.There are very large, sudden swings in signal strength
- D.Scatter propagation occurs only at night
WhyA characteristic of HF scatter is that signals have a fluttering sound. HF scatter signals characteristically have a fluttering, warbling sound, a byproduct of energy arriving via multiple slightly different scattered paths at once, answer B. Scatter doesn't produce especially high-fidelity phone audio, doesn't cause dramatic sudden strength swings the way fading from a completely different mechanism might, and it isn't limited to nighttime only.
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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