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Originally Posted by jdkbph
Confused....
If this is the case, what is the A scope doing there right next to the PPI? SJ didn't use both at the same time, did it? If so, why?
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Yes, the SJ radar did use the A-Scope. The A-Scope gives range readouts, the SJ, bearings. Don't believe me?:
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Actually, that's the SJ - Surface search radar. The SJ first appeared with an A-scope type display and later - through the SJ-a/SJ-1 version, gained the PPI type screen.
The SD - aircraft search radar - also had an A-scope, and was non-directional. We don't model that one as mannable station.
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