FCC Question Pool Review

Amateur Extra Class (Element 4) • 2024-2028

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Question E4E06

From subelement E4 - E4E

E4E06
Answer: C

What type of electrical interference can be caused by computer network equipment?

AA loud AC hum in the audio output of your station’s receiver
BA clicking noise at intervals of a few seconds
CThe appearance of unstable modulated or unmodulated signals at specific frequencies
DA whining-type noise that continually pulses off and on