FCC Question Pool Review

Amateur Extra Class (Element 4) • 2024-2028

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Question E9C02

From subelement E9 - E9C

E9C02
Answer: A

What type of radiation pattern is created by two 1/4-wavelength vertical antennas spaced 1/4- wavelength apart and fed 90 degrees out of phase?

ACardioid
BA figure-eight end-fire along the axis of the array
CA figure-eight broadside to the axis of the array
DOmni-directional