FCC Question Pool Review

Amateur Extra Class (Element 4) • 2024-2028

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Question E8B02

From subelement E8 - E8B

E8B02
Answer: D

How does the modulation index of a phase-modulated emission vary with RF carrier frequency?

AIt increases as the RF carrier frequency increases
BIt decreases as the RF carrier frequency increases
CIt varies with the square root of the RF carrier frequency
DIt does not depend on the RF carrier frequency