Extra exam question E9C10
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9C
Which of the following describes a Zepp antenna?
- A.A horizontal array capable of quickly changing the direction of maximum radiation by changing phasing lines
- B.An end-fed half-wavelength dipole (correct answer)
- C.An omni-directional antenna commonly used for satellite communications
- D.A vertical array capable of quickly changing the direction of maximum radiation by changing phasing lines
WhyA Zepp antenna is an end-fed half-wavelength dipole. A Zepp antenna is an end-fed half-wavelength dipole, historically fed at one end by a length of open-wire line (originally trailing from a Zeppelin airship, which gave the design its name), answer B. It isn't a quickly reconfigurable phased horizontal or vertical array, and it isn't specifically an omnidirectional satellite antenna, none of those describes a Zepp's basic end-fed half-wave construction.
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.
Related questions
- E9C01What type of radiation pattern is created by two 1/4-wavelength vertical antennas spaced 1/2- wavelength apart and fed 180 degrees out of phase?
- E9C02What type of radiation pattern is created by two 1/4-wavelength vertical antennas spaced 1/4- wavelength apart and fed 90 degrees out of phase?
- E9C03What type of radiation pattern is created by two 1/4-wavelength vertical antennas spaced 1/2- wavelength apart and fed in phase?
- E9C04What happens to the radiation pattern of an unterminated long wire antenna as the wire length is increased?
- E9C05What is the purpose of feeding an off-center-fed dipole (OCFD) between the center and one end instead of at the midpoint?