Technician exam question T3A07
Subelement T3, RADIO WAVE PROPAGATION· Group T3A
What weather condition might decrease range at microwave frequencies?
- A.High winds
- B.Low barometric pressure
- C.Precipitation (correct answer)
- D.Colder temperatures
WhyPrecipitation can decrease range at microwave frequencies. Microwave frequencies are short enough in wavelength that raindrops and other precipitation are comparable in size to the wave, causing significant scattering and absorption that can noticeably shorten range during heavy rain or snow, answer C. Wind (A), barometric pressure (B), and colder temperatures alone (D) don't have this same direct scattering effect on microwave signals.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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