Technician exam question T4B08
Subelement T4, AMATEUR RADIO PRACTICES· Group T4B
What is the advantage of having a choice of receiver filter bandwidths in a multimode transceiver?
- A.Permits monitoring several modes simultaneously by selecting a separate filter for each mode
- B.Permits noise or interference reduction by selecting a bandwidth matching the mode (correct answer)
- C.Increases the number of frequencies that can be stored in memory
- D.Increases the amount of offset between receive and transmit frequencies
WhyHaving a choice of receiver filter bandwidths in a multimode transceiver permits noise or interference reduction by selecting a bandwidth matching the mode. Choosing a receiver filter bandwidth that matches the mode being received, narrow for CW, wider for SSB voice, admits just enough bandwidth for that signal while excluding noise and adjacent-signal energy outside it, improving intelligibility, answer B. A multimode filter doesn't let an operator monitor multiple modes at once (A), it doesn't add memory channels (C), and it has no relationship to the transmit/receive offset (D).
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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