Q. Microwave links repeaters are typically 50KM apart

A
Because of atmospheric attenuation
B
Because of output tube power limitations
C
Because of Earth?s curvature
D
To ensure that the applied voltage is not excessive
Solution:

microwave repeater is a tower equipped with a receiver and transmitter for picking up, amplifying, and passing on in either direction the signals sent over a microwave network by highly directional microwave beams. Also known as microwave link or microwave relay. The availability of clear Line of Sight is crucial for Microwave links for which the Earth?s curvature has to be allowed.

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