Technician exam question T8A12
Subelement T8, SIGNALS AND EMISSIONS· Group T8A
Which of the following is a disadvantage of FM compared with single sideband?
- A.Voice quality is poorer
- B.Only one signal can be received at a time (correct answer)
- C.FM signals are harder to tune
- D.FM signals are more susceptible to high SWR
WhyA disadvantage of FM compared with single sideband is that only one signal can be received at a time. FM's capture effect means the strongest signal on a frequency dominates the receiver's audio output entirely, so unlike SSB, where multiple signals can often be picked out together, only one FM signal can effectively be heard at a time, answer B. FM voice quality isn't inherently poorer than SSB's (A), FM signals aren't harder to tune since there's no exact zero-beat needed (C), and neither mode is notably more sensitive to high SWR than the other (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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