Extra exam question E1B02
Subelement E1, COMMISSION RULES· Group E1B · 47 CFR §97.307(f)(2)
Which of the following is an acceptable bandwidth for digital voice or slow-scan TV transmissions made on the HF amateur bands?
- A.3 kHz (correct answer)
- B.10 kHz
- C.15 kHz
- D.20 kHz
Why3 kHz is an acceptable bandwidth for digital voice or slow-scan TV transmissions on the HF amateur bands. §97.307(f)(2) caps the bandwidth of digital voice and slow-scan TV emissions on the HF amateur bands at 3 kHz, the same general ceiling used for other wide analog-style emissions there, answer A. 10, 15, and 20 kHz bandwidths are all too wide for what's allowed in these HF segments.
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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