Question Pool -- Category G3C
What is the "critical angle" as used in radio-wave propagation?
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A.
- The lowest takeoff angle that will return a radio wave to the
earth under specific ionospheric conditions
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B.
- The compass direction of a distant station
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C.
- The compass direction opposite that of a distant station
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D.
- The highest takeoff angle that will return a radio wave to the
earth under specific ionospheric conditions
Answer is D.
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