Technician exam question T4B10
Subelement T4, AMATEUR RADIO PRACTICES· Group T4B
Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception?
- A.500 Hz
- B.1000 Hz
- C.2400 Hz (correct answer)
- D.5000 Hz
WhyA 2400 Hz receiver filter bandwidth provides the best signal-to-noise ratio for SSB reception. A 2400 Hz filter closely matches the actual bandwidth of an SSB voice signal, wide enough to pass the full voice content without clipping it, but no wider, which gives the best signal-to-noise ratio, answer C. The narrower 500 Hz and 1000 Hz filters (A, B) are suited to CW or narrow digital modes and would cut off SSB voice audio, and 5000 Hz (D) is wider than an SSB signal needs, letting in extra noise and adjacent-channel energy.
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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