General exam question G2E05
Subelement G2, OPERATING PROCEDURES· Group G2E
G2E05
What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?
- A.LSB
- B.USB (correct answer)
- C.DSB
- D.SSB
WhyJT65, JT9, FT4, and FT8 all use upper sideband by convention when sent via AFSK. JT65, JT9, FT4, and FT8 all use upper sideband by convention when sent via AFSK, regardless of which HF band they're on, answer B. Lower sideband is not the convention for these particular modes, and "DSB"/"SSB" alone aren't sideband choices in the way the question is asking.
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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