Extra exam question E4C07
Subelement E4, AMATEUR PRACTICES· Group E4C
What does the MDS of a receiver represent?
- A.The meter display sensitivity
- B.The minimum discernible signal (correct answer)
- C.The modulation distortion specification
- D.The maximum detectable spectrum
WhyMDS stands for minimum discernible signal, the weakest signal a receiver can just detect above its noise floor. MDS stands for minimum discernible signal, the weakest signal level a receiver can just barely detect above its own noise floor, a standard sensitivity specification, answer B. "Meter display sensitivity," "modulation distortion specification," and "maximum detectable spectrum" aren't real receiver specifications and don't match what MDS actually stands for.
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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