What is the significance of the 'blind zone' (dead zone) directly around a radar antenna?
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A
It is the area where the radar beam has maximum power and saturates the receiver
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B
It is the minimum range within which targets cannot be detected because the duplexer is still recovering
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C
It is a regulatory exclusion zone where radar emissions are prohibited
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D
It is the area affected by multipath reflections from the vessel's own superstructure