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Amateur Extra Class Exam Question Pool Review
Question E9A01:
Which of the following describes an isotropic radiator?
Answers:
A.A grounded radiator used to measure earth conductivity
B.A horizontal radiator used to compare Yagi antennas
C.A theoretical radiator used to compare other antennas
D.A spacecraft radiator used to direct signals toward the earth
Correct answer is:C
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