Microwave Communication
If k-factor is greater than 1, the array beam is bent

Towards the outer space
Away from the earth
Towards the earth
Towards the ionosphere,

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Microwave Communication
When used in conjunction with a radar set, the purpose of an echo box is to provide an artificial target.

To the tone of the pulse repetition
Tune the magnetron to the correct frequency
Which may be used to tune the radar synchronizer
Which may be used to tune the radar receiver

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Microwave Communication
In a pulsed radar set, the STC circuit is used to

Increases receiver sensitivity for echoes from targets
Improve the target bearing resolution
Reduce interference from the effects of sea return
Vary the pulse frequency in order to control the maximum target

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