Extra exam question E3B08
Subelement E3, RADIO WAVE PROPAGATION· Group E3B
How does the maximum range of ground-wave propagation change when the signal frequency is increased?
- A.It stays the same
- B.It increases
- C.It decreases (correct answer)
- D.It peaks at roughly 8 MHz
WhyThe maximum range of ground-wave propagation decreases as the signal frequency increases. Ground-wave propagation, where a signal follows the curvature of the Earth's surface, loses range as frequency goes up because higher-frequency signals are absorbed by the ground more quickly, shrinking the practical ground-wave coverage area, answer C. Range doesn't stay constant or increase with frequency, and there's no peak around 8 MHz, ground-wave range simply keeps shrinking as frequency rises.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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