Extra exam question E4D02
Subelement E4, AMATEUR PRACTICES· Group E4D
Which of the following describes problems caused by poor dynamic range in a receiver?
- A.Spurious signals caused by cross modulation and desensitization from strong adjacent signals (correct answer)
- B.Oscillator instability requiring frequent retuning and loss of ability to recover the opposite sideband
- C.Poor weak signal reception caused by insufficient local oscillator injection
- D.Oscillator instability and severe audio distortion of all but the strongest received signals
WhyPoor receiver dynamic range causes spurious signals from cross modulation and desensitization from strong adjacent signals. Poor receiver dynamic range shows up as spurious signals generated by cross modulation and as desensitization when strong adjacent signals overload front-end circuitry, real symptoms of a receiver being pushed past its linear operating range, answer A. Oscillator instability, loss of opposite-sideband recovery, and audio distortion tied to insufficient LO injection are different kinds of receiver problems, not what poor dynamic range specifically causes.
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
- E4D01What is meant by the blocking dynamic range of a receiver?
- E4D03What creates intermodulation interference between two repeaters in close proximity?
- E4D04Which of the following is used to reduce or eliminate intermodulation interference in a repeater caused by a nearby transmitter?
- E4D06What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?
- E4D07Which of the following reduces the likelihood of receiver desensitization?