Technician exam question T9A11
Subelement T9, ANTENNAS AND FEED LINES· Group T9A
What is antenna gain?
- A.The additional power that is added to the transmitter power
- B.The additional power that is required in the antenna when transmitting on a higher frequency
- C.The increase in signal strength in a specified direction compared to a reference antenna (correct answer)
- D.The increase in impedance on receive or transmit compared to a reference antenna
WhyAntenna gain is the increase in signal strength in a specified direction compared to a reference antenna. Antenna gain is the increase in effective signal strength in a particular direction that a given antenna provides compared to a reference antenna, achieved by reshaping the radiation pattern rather than by adding actual power, answer C. It isn't extra power added to the transmitter (A), it has nothing to do with operating frequency requiring more power (B), and it isn't a change in impedance (D), gain describes directional signal concentration, not impedance.
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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