Radio Amateur Quiz Canadian License

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Question A-007-005-007

A parabolic antenna is very efficient because:

Correct Answer

all the received energy is focused to a point where the pick-up antenna is located

Explanation

The parabolic reflector collects incoming plane waves over its large aperture and focuses them to a single point (the focal point), where the actual receiving element (feed horn) is placed, concentrating the energy.

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