General exam question G4D06
Subelement G4, AMATEUR RADIO PRACTICES· Group G4D
G4D06
How much change in signal strength is typically represented by one S unit?
- A.6 dB (correct answer)
- B.12 dB
- C.15 dB
- D.18 dB
WhyOne S unit on a calibrated S meter typically represents a 6 dB change in signal strength. By convention, each S unit on a calibrated S meter represents a 6 dB change in received signal strength, answer A. The larger values in B, C, and D don't match the standard S-meter calibration used across amateur and commercial receivers.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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