🛰️ Selfridge AFB radar station

The Selfridge AFB radar station is a United States military facility in Michigan. It began operations in 1949 with a Bendix AN/CPS-5 Radar test that tracked aircraft at 210 mi (340 km). A height finder MIT AN/CPS-4 Radar was added by March 9, 1950; and the station was site L-17 of the Lashup Radar Network and site LP-17 of the subsequent network during construction of the Air Defense Command permanent network. The 661st Aircraft Control and Warning Squadron was activated at Selfridge in 1951, and with a pair of General Electric AN/CPS-6 Radars, the station became site LP-20 of the permanent ADC network in 1952. In 1957 the station added a height finder General Electric AN/FPS-6 Radar. The station became part of the Semi Automatic Ground Environment radar network in 1959, supplying radar tracks to SAGE data center DC-06 at Custer Air Force Station, Michigan, for directing interceptor aircraft and CIM-10 Bomarc air defense missiles.