General exam question G1A06
Subelement G1, COMMISSION’S RULES· Group G1A · 47 CFR §97.303
Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?
- A.Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
- B.Amateur stations may use the band only during emergencies
- C.Amateur stations must not cause harmful interference to primary users and must accept interference from primary users (correct answer)
- D.Amateur stations may only operate during specific hours of the day, while primary users are permitted 24- hour use of the band
WhyWhen the amateur service operates as a secondary user on a band, amateur stations must avoid causing harmful interference to the primary service and must accept whatever interference the primary service causes in return. When the amateur service is a secondary user of a band, FCC §97.303 requires amateur stations to avoid causing harmful interference to the primary service and to accept whatever interference the primary service causes in return, answer C. There's no requirement to log the primary station's call sign, no restriction to emergency-only use, and no fixed daily operating window, those all describe things §97.303 simply doesn't say.
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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