SG radar
The SG radar was an American naval surface-search radar developed during the Second World War. The prototype was tested at sea aboard the destroyer  in May 1941. It was the first microwave surface-search radar to be equipped with a plan position indicator. The first operational set was installed aboard the heavy cruiser  in April 1942. Notes

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Naval radars
World War II radars
Military equipment introduced from 1940 to 1944
Military radars of the United States