“РЛС П-40 “БРОНЯ“ P-40 Radar “Armour“ 1S12 “Long Track“ 3-D UHF

The P-40 “Armour“ or 1S12 (also referred to by the NATO reporting name “Long Track“in the west) is a 3-D UHF radar developed and operated by the former Soviet Union. The P-40 started development in 1960 and by 1962 the radar had completed state trails and in 1963 was accepted into service by the anti-aircraft troops of the Soviet armed forces[1]. In 1965 the P-40 gained the GRAU designation 1S12 as it was adopted as the target acquisition radar of the 2K11 Krug mobile anti-aircraft defence system.