The Semi-Automated Ground Environment was a system of large computers and associated networking equipment that coordinated data from many radar sites and processed it to produce a single unified image
The 4-story SAGE blockhouses with 3.5 acres (1.4 ha) of floor space "were hardened [for] overpressures of" 5 psi (34 kPa). A shorter adjoining building (left) had generators below the 4 intake/exhaust structures on the roof. (DC-01 shown)
Whirlwind computer elements: core memory (left) and operator console
The RCA #6499 Radechon tube was used for random-access memory in the computers.
The RCA 474L Ballistic Missile Early Warning System was a United States Air Force Cold War early warning radar, computer, and communications system, for ballistic missile detection. The network of twe
Three of the huge AN/FPS-50 radars, BMEWS Site 2, near Anderson, Alaska, in 1962
BMEWS tracking monitors in the Thule Tactical Operations Room, which were upgraded in 1987
4 AN/FPS-50 detection reflectors at Thule Site J. The concrete foundation included a large refrigeration system to prevent the curing concrete's heat from melting the permafrost
Fylingdales AN/FPS-49 radomes in 1986