Ground Air Transmit Receive

rdf:langString Ground Air Transmit Receive

rdf:langString Ground Air Transmit Receive (GATR) control sites were the radio stations of a Burroughs 416L SAGE Defense System of the United States Air Force. They were deployed to automate ground-controlled interception using manned interceptors. Generally located near or, in some cases, on an Aerospace Defense Command radar station, a GATR site was used for the to communicate command guidance via HF/VHF/UHF voice and TDDL to vector F-106 Delta Dart and other suitably equipped aircraft that had been dispatched by teams in Weapons Direction rooms of SAGE Direction Centers. Maintenance was done by the 304x4 Ground Radio Maintenance career field, with initial technical training at Keesler Air Force Base. The sites included the (TDDL) equipment, that fed a two-channel , employing Varian klystrons to deliver 20 kilowatts output power (early sites used the 100 watt, single-channel AN/GRT-3 instead. The aircraft receivers were either or of the . Most GATR/SAGE sites are now Formerly Used Defense Sites (e.g., the 6-acre (2.4 ha) site supported by Oakdale Air Force Station, Pennsylvania) that were closed by the 1995 Base Realignment and Closure Commission.