one ("Darth Vader") with the NNP-21 and DV observation devices and a rangefinder. Other specialized equipment comprises the UD-15G internal generator, four radio sets (three R-123M and one R-107M), as well as the 1V510 computer, the PUO-9M fire control set and the PAB-2A aiming circle. Crew consisted of five soldiers. Each 1V17 "Mashina-B" set consists of three 1V18s, one 1V19 (qv), three 1V110s (based on GAZ-66) and one 1V111 (based on ZIL-131). BTR-60 1V18-1 – Modernized model. BTR-60 1V19 "Klyon-2" – BTR-60PB converted into an artillery fire direction center externally identical to the BTR-60 1V18 but provided with the R-130M radio set and an additional stowage box on each upper side of the hull. Used by battalion commanders. BTR-60 1V19-1 – Modernized model. BTR-60 R-145BM – BTR-60PB converted into a turret-less communications vehicle and equipped with five radio sets: two R-111 or R-171, one R-123 or R-173, one R-130M, and one R-012M. BTR-60PU-12 (9S482) (punkt upravleniya) (1972) – BTR-60PB converted into an air defense command vehicle and used by units equipped with ZSU-23-4, SA-9 or SA-13. The turret was removed and the vehicle was fitted with the AMU telescope mast on the right side of the front hull roof and the AB1-P/30 1 kW generator on top of the blanking plate. The vehicle is equipped with the 1G13 gyroscope, the KP-4 navigation apparatus and the ASPD-12 computer. Often, the PU-12 is connected to a radar and the radar image is directly visible on the vehicle's IT-45 monitor. BTR-60PU-12M can process up to 12 targets. BTR-60PU-12M (9S482M) – Modernized model developed in the 1980s for units equipped with more modern SAM systems. This model is equipped with the more modern ASPD-U computer instead of the ASPD-12 and with the S 23-1 data processing unit connected to the MP-21, MP-22, Strela-10M, Osa-AK etc. BTR-60PU-12M can process up to 99 targets instead of only 12. BTR-60R-975 – Vehicle used by Tactical Air Control Parties, equipped with four radio sets (R-123, R-134, R-853 and R-864), as well as the SMI-2 km beacon system (protected by a conical cover during transport) and the G-290B generator. It has two blade antennas on the rear of the deck. BTR-60R-975M1 – Modernized version. It doesn't have the conical cover for the beakon system. BTR-60R-137B – BTR-60PB converted into a USW signals vehicle similar to the BTR-60R-140BM. It is equipped with two radio sets: R-123 and R-405. It also