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Amateur Extra Class Exam Question Pool Review
Question E3A02:
What characterizes libration fading of an earth-moon-earth signal?
Answers:
A.A slow change in the pitch of the CW signal
B.A fluttery irregular fading
C.A gradual loss of signal as the sun rises
D.The returning echo is several hertz lower in frequency than the transmitted signal
Correct answer is:B
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