Extra exam question E1F01
Subelement E1, COMMISSION RULES· Group E1F · 47 CFR §97.305
On what frequencies are spread spectrum transmissions permitted?
- A.Only on amateur frequencies above 50 MHz
- B.Only on amateur frequencies above 222 MHz (correct answer)
- C.Only on amateur frequencies above 420 MHz
- D.Only on amateur frequencies above 144 MHz
WhySpread spectrum transmissions are permitted only on amateur frequencies above 222 MHz. §97.305 permits spread spectrum transmissions only on amateur frequencies above 222 MHz, keeping this wideband emission type off the more congested HF and low-VHF segments, answer B. 50 MHz and 144 MHz are both below that threshold, so spread spectrum isn't authorized starting there, and 420 MHz, while above the threshold, isn't the actual cutoff the rule specifies.
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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