Extra exam question E8B07
Subelement E8, SIGNALS AND EMISSIONS· Group E8B
Orthogonal frequency-division multiplexing (OFDM) is a technique used for which types of amateur communication?
- A.Digital modes (correct answer)
- B.Extremely low-power contacts
- C.EME
- D.OFDM signals are not allowed on amateur bands
WhyOrthogonal frequency-division multiplexing (OFDM) is a technique used for amateur digital modes. Orthogonal frequency-division multiplexing is a technique amateurs use for digital modes, splitting data across many closely spaced, mutually orthogonal subcarriers to resist multipath and interference, answer A. It isn't specifically for extremely low-power contacts or EME, and it's a fully permitted technique on amateur bands, not a prohibited one.
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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