The surface wave eventually disappears as one moves away from the transmitter because of
A. Absorption by ground
B. Maximum single hop distance limitation
C. Interference from the sky wave
D. Loss of line-of-sight condition
Answer: Option A
A. Absorption by ground
B. Maximum single hop distance limitation
C. Interference from the sky wave
D. Loss of line-of-sight condition
Answer: Option A
It is found that a ship to ship communication suffers from fading. This can be avoided by using
A. Space diversity
B. Frequency diversity
C. Broad band antenna
D. Directional antenna
A. A double-tuned amplifier
B. A high gain D.C. amplifier
C. A cathode follower stage
D. None of the above
A. Filter method
B. Phase cancellation method
C. Good attenuation characteristics
D. All of the above
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