High Quality Content by WIKIPEDIA articles! The SCR-584 (short for Signal Corps Radio # 584) was a microwave radar developed by the MIT Radiation Laboratory during World War II. It replaced the earlier and much more complex SCR-268 as the US Army`s primary anti-aircraft gun laying system as quickly as they could be produced. In service it proved to be an outstanding system, much more advanced than any other battlefield radar system deployed during the war.