Category:Permanent System radar stations

The main article for this category is Permanent System radar stations.

Not to be confused with Category:Semi-Automatic Ground Environment sites or Category:SAGE radar stations.

For other Permanent System sites such as command centers (e.g., NORAD/CONAD/ADC center at Ent Air Force Base), filter centers, and local observer sites, see Manual Air Defense Control Center and Ground Observation Corps.