Amateur ExtraE1F11

Which of the following best describes one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC certification?

D
Answer
Extra class rules and station restrictions
Type
A
It must produce full legal output when driven by not more than 5 watts of mean RF input power
B
It must have received an Underwriters Laboratory certification for electrical safety as well as having met IEEE standard 14.101(B)
C
It must exhibit a gain of less than 23 dB when driven by 10 watts or less
D
It must satisfy the FCC’s spurious emission standards when operated at the lesser of 1500 watts or its full output power

Answer Notes

The FCC requires that commercially manufactured external RF power amplifiers meet specific technical standards to prevent harmful interference, especially spurious emissions that might cause out-of-band interference. One primary requirement for FCC certification is that the amplifier must satisfy spurious emission standards when operating at its maximum legal limit (1500 watts PEP) or its maximum rated power, whichever is less. Distractors such as Underwriters Laboratory (UL) certification are incorrect because the FCC regulates RF emissions and spectrum management, not electrical fire safety. Additionally, while the FCC does limit amplifier gain in specific ways to prevent illegal use by CB operators on 11 meters, the strict limit of less than 23 dB when driven by 10 watts is a fabricated distractor.
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