One of the uses of the AN/GRR-5 was in the AN/GSS-1 Electronic Search Central shelter.  Here is a brief summary of the AN/GSS-1 that I copied from something years ago, can't remember exactly what.  I would really like to have one of those shelters - forget the radar, it's the perfect ham shack!  Attached are some photos showing the AN/GRR-5 installation along with an AN/GRC-9.  Mike, W6MAB

AN/GSS-1

The 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".   An intercom system for the "four-man team" was within the shelter of "about 6 feet high, 6 feet wide and 12 feet long" with a "personnel area [and] equipment compartment".

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]