Marina Exam Reviewer: Which statement is TRUE concerning night effect and the reception of radio signals?

Marina Exam Reviewer

Which statement is TRUE concerning night effect and the reception of radio signals? 

A. Night effect is most prevalent late at night 
B. During night effect polarization is at a minimum 
C. Night effect is caused by rapid changes in the ionosphere 
D. Night effect is caused by all of the polarized ground waves being vertical  


Answer:      A. Night effect is most prevalent late at night 

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