Extra exam question E4C08
Subelement E4, AMATEUR PRACTICES· Group E4C
An SDR receiver is overloaded when input signals exceed what level?
- A.One-half of the maximum sample rate
- B.One-half of the maximum sampling buffer size
- C.The maximum count value of the analog-to-digital converter
- D.The reference voltage of the analog-to-digital converter (correct answer)
WhyAn SDR receiver becomes overloaded once input signals exceed the reference voltage of its analog-to-digital converter. An SDR receiver is overloaded once input signals push the analog-to-digital converter past its reference voltage, the maximum voltage swing the converter can represent without clipping, answer D. It isn't defined by half the sample rate or buffer size, those relate to timing and storage rather than input signal level, and it isn't the converter's maximum count value directly, that's a digital representation of the voltage limit, not the limit itself.
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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