Radar 1C91 SURN KUB is the designation of the Soviet mobile radar system, designed mainly to track air targets of the Cold War and modern times. Production of these radar systems began in the 1960s, initially intended for the Soviet Army, and later for export. The 1S91 SURN KUB radar is designed for the 2K12 Kub anti-aircraft missile system (NATO code: SA-6 Gainful). In fact, the presented radar consisted of two radars: 1C11 (intended specifically for targeting) and 1C31 (intended to illuminate targets with effectors of the 2C12 system). In addition, the system was equipped with an IFF identifier and optical surveillance systems. It is believed that the system was able to track a target the size of a fighter jet and successfully guide a missile at this target from a distance of about 50 kilometers. The 1С91 SURN KUB radar was installed on a tracked chassis weighing about 20 tons, and the crew consisted mainly of 4 axles
