General exam question G9B11
Subelement G9, ANTENNAS AND FEED LINES· Group G9B
G9B11
What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?
- A.42 feet
- B.84 feet
- C.132 feet (correct answer)
- D.263 feet
WhyA 1/2 wave dipole antenna cut for 3.550 MHz has an approximate length of 132 feet. A half-wave dipole's approximate length in feet is found from 468 divided by the frequency in MHz, so 468 divided by 3.550 comes out to about 132 feet, answer C. The other values don't match applying that standard dipole-length formula at 3.550 MHz.
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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