Burroughs AN/FST-2 Coordinate Data Transmitting Set

The Burroughs AN/FST-2 Coordinate Data Transmitting Set (CDTS) Mill Valley Air Force Station was a Cold War military computer system at SAGE radar stations for displaying aircraft tracks and converting them for digital transmission to IBM AN/FSQ-7 Combat Direction Centrals at air defense data centers. Developed by the Great Valley Research Laboratory of the Burroughs Corporation as part of the Electronic Systems Division's 416L network of computers, 134 CDTSs were deployed. Each was to "process the raw radar data, antenna position information, and IFF data, and send it over voice grade toll phone lines" at ~1200 baud with 1/4 mile precision. The transmissions were received as "Long Range Radar Input" at SAGE Direction Centers, which performed the aircraft control and warning operations (e.g., launch and flight control for CIM-10 Bomarc SAMs) and provided command information to Command Centers which forwarded data to the NORAD command center in Colorado (Ent AFB, 1963 Chidlaw Building, & 1966 Cheyenne Mountain). The AN/FST-2A included 2 vacuum tube computers and accepted 14 input signals (32 inputs for transistorized AN/FST-2B sets).