Extra exam question E4A07
Subelement E4, AMATEUR PRACTICES· Group E4A
Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge?
- A.Antenna analyzers automatically tune your antenna for resonance
- B.Antenna analyzers compute SWR and impedance automatically (correct answer)
- C.Antenna analyzers display a time-varying representation of the modulation envelope
- D.All these choices are correct
WhyAn antenna analyzer's advantage over a plain SWR bridge is that it computes SWR and impedance automatically. An antenna analyzer's real advantage over a plain SWR bridge is that it computes and displays SWR and impedance directly, without requiring a separate transmitter or manual calculation the way an SWR bridge setup does, answer B. It doesn't automatically retune your antenna for you, and it doesn't display a time-varying modulation envelope, that's an oscilloscope function unrelated to what an antenna analyzer does.
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.
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