Question Pool -- Category E3B
At what time of day is gray-line propagation most prevalent?
-
A.
- Twilight, at sunrise and sunset
-
B.
- When the sun is directly above the location of the transmitting
station
-
C.
- When the sun is directly overhead at the middle of the
communications path between the two stations
-
D.
- When the sun is directly above the location of the receiving
station
See answer.
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