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The[who?]AN/GSS-1 Electronic Search Central was a United States radar/communication system 1st fielded in the mid-1950s for Project Nike with a "medium-range, transportable radar set [used] as a search radar".[1] The Cold War central included a Western Electric "AN/TPS-1D radar and AN/TPX-19 interrogator system…in a fully enclosed shelter [with communications] provided by radio receiving set AN/GRR-5, radio set AN/GRC-9 and by three telephone lines".[2] An intercom system for the "four-man team" was within the shelter of "about 6 feet high, 6 feet wide and 12 feet long"[2] with a "personnel area [and] equipment compartment".[3]

As part of the Hughes AN/MSG-4 Antiaircraft Defense System, the team in the radar section of a battalion would use the AN/GSS-1 to provide radar tracks to the battalion operations center, e.g., the Raytheon AN/MSQ-18 Battalion Missile Operations System for command and control of (fire distribution to) up to 4 Nike fire control/launch sites.[4] An AN/GSS-1 was used in Germany as late as 1978[5] after being fielded as part of the AN/TSQ-73 Guided Missile Air Defense System.[6]

External image
radar site with 20' antenna


  1. ^ Lesson 5: Air Defense Command and Control and Radar Warning Systems (transcript of military lesson plan at, United States Army, date tbd, retrieved 2012-10-24  Check date values in: |date= (help)
  2. ^ a b "CPN - Air Transportable; Radar; Navigation Aid" (transcription at Retrieved 2012-10-22. 
  3. ^ Spradlin, K.M (21 August 1961). …Collective Protection Equipment for the AN/MSG-4 System (Monthly Progress Report) (Report). Fullerton, California: Hughes Aircraft Company. Retrieved 2012-10-22. AN/MSG-4 Antiaircraft Defense System … The [AN/MSQ-28] semitrailer vans manufactured by Miller Trailers … the AN/TSQ-38 Operations Central. (OC) and Coder-Decoder Groups (CDG's) and on the Weapons, Monitoring Center (WMC) and the Radar Data Processing Center (RDPC) … Hughes Aircraft Company Ground Systems Group 
    • The subsequent 1 December 1961 report has "Mr. Mears requested that the Radar Surveillance Central AN/GSS-lD System be included in the feasibility study" and:
      The AN/GSS-1 shelter was ...divided a partition comprised of three sliding panels [the] personnel area [and] the equipment compartment. Located in this area are the power supply (PP-674/TPS-ID), signal comparator (CM-36/TPS-ID), radar modulator (MD-144/TPS-ID), receiver-transmitter (RT-212/TPS-ID), antenna base (AB-2Zl/TPS-lD), and the azimuth-range indicator (IP-141/TPS-lD). ... The trailer--mounted gasoline engine generator set (PU-253/U) that supplies power to the AN/GSS-ID System is comprised of two gasoline engine generator sets (PU-107/U) mounted in a type M-105 two-wheel trailer. The PU-107/U generator has a 400-cps single-phase output of 118-120 volts, 10 kw, 104 amp (maximum) and a d-c output of 28 volts, 2.5 kw, 90 amp. The specification power requirement for the AN/GSS-lD Radar Surveillance Central is 7.82 kw at 115 volts, 400-cps a-c and 1.4 kw at 28 volts d-c. ... Technical Manual TM 11-1162 indicates that the AN/ GSS-1D equipment can be operated when the shelter is mounted on an M35 truck or M8EZ Cargo Carrier. It is assumed, however, that most of the time the shelter will be mounted on the ground, and therefore the Protective Entrance should be designed accordingly. The problems encountered are similar to those of the AN/TSQ-38 Helihut..."
  4. ^ FM 44-1: U. S. Army Air Defense Employment (field manual). Headquarters, Department of the Army. 11 October 1965. Retrieved 2011-10-22. FM 44-13 U.S. Army Air Defense Fire Direction System, AN/MSG-4 (Missile Monitor) … The battalion radar section's electronic search central AN/GSS-1 or AN/GSS-7 provides local radar data at battalion level. … The battalion's AN/GSS-1 electronic search central should be located 9 to 27 kilometers behind the FEBA and positioned to take advantage of its 300-kilometer maximum range. Site selection details are provided in FM 44-7. … The FDS [Fire Distribution System] AN/MSQ-18 is that portion of Missile Monitor consisting of a battalion fire distribution center (BFDC) and battery terminal equipment (BTE) for each associated missile battery. 
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