Technician exam question T9A09
Subelement T9, ANTENNAS AND FEED LINES· Group T9A
What is an advantage of a 5/8-wavelength whip antenna for VHF or UHF mobile service compared to a 1/4-wave antenna?
- A.It has more gain (correct answer)
- B.It radiates at a higher angle
- C.It has lower SWR
- D.It has lower impedance
WhyA 5/8-wavelength whip antenna has more gain than a 1/4-wave antenna for VHF or UHF mobile service. A 5/8-wavelength whip's longer radiating element concentrates more radiated energy toward the horizon than a 1/4-wave antenna's pattern does, giving it noticeably more gain in the directions that matter most for mobile work, answer A. It actually radiates at a lower angle than a 1/4-wave antenna, not higher (B), and its impedance and SWR characteristics aren't automatically better without a proper matching network (C, D).
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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