Extra exam question E2E07
Subelement E2, OPERATING PROCEDURES· Group E2E
How does Q65 differ from JT65?
- A.Keyboard-to keyboard operation is supported
- B.Quadrature modulation is used
- C.Multiple receive cycles are averaged (correct answer)
- D.All these choices are correct
WhyQ65 improves on JT65's weak-signal performance by averaging results across multiple receive cycles. Q65 improves on JT65's weak-signal performance largely by averaging results across multiple receive cycles rather than decoding each cycle in isolation, which helps pull a usable signal out of especially difficult multipath conditions like EME, answer C. Neither mode supports live keyboard-to-keyboard chat, and Q65 doesn't use quadrature modulation, so neither A, B, nor "all these choices" fits.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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