S-300P
The S-300P (transliterated from Russian С-300П, NATO reporting name SA-10 Grumble) is the original version of the S-300 system which became operational in 1978.[1] In 1987, over 80 of these sites were active, mainly in the area around Moscow. The P suffix stand for PVO-Strany (country air defence system). An S-300PT unit consists of a 36D6 (NATO reporting name TIN SHIELD) surveillance radar, a 30N6 (FLAP LID) fire control system and 5P85-1 launch vehicles. The 5P85-1 vehicle is a semi-trailer truck. Usually a 76N6 (CLAM SHELL) low altitude detection radar is also a part of the unit.
S-300PS
was introduced in 1985 and is the only version thought to have been fitted with a nuclear warhead. This model saw the introduction of the modern TEL and mobile radar and command-post vehicles that were all based on the MAZ-7910 8 × 8 truck.[1] This model also featured the new 5V55R missiles which increased maximum engagement range to 90 km (56 mi) and introduced a terminal semi-active radar homing (SARH) guidance mode. The surveillance radar of these systems was designated 30N6. Also introduced with this version was the distinction between self-propelled and towed TELs. The towed TEL is designated 5P85T. Mobile TELs were the 5P85S and 5P85D. The 5P85D was a "slave" TEL, being controlled by a 5P85S "master" TEL. The "master" TEL is identifiable thanks to the large equipment container behind the cabin; in the "slave" TEL this area is not enclosed and is used for cable or spare tyre storage.
S-300PMU
The third generation of the S-300P system was the S-300PMU (U for Usovershenstvovanniy, meaning finalised). The S-300PMU programme was intended to provide an enhanced mobility version of the system to replace obsolete PVO missile systems with the forward-deployed groups of forces in Europe.
S-300PM
The S-300PM (M for Modernizovanniy, meaning modernised) underwent an extensive modernisation package with design changes to almost all the key components of the earlier S-300P variants. Essentially the advancements were based on the S-300PS and S-300PMU (described after the S-300PM here), but it also incorporated improvements in the missile round design and upgrades in the radar system.
S-300PMU-1
The S-300PMU-1 is an export version of S-300PM. It differs from the earlier S-300PMU in using the 30N6E1 ‘Tomb Stone’, having updated technology in all major systems and a significant update of the software used in its fire control systems. The S-300PMU-1 system has a capability to intercept ballistic missiles with ranges of 600 km, with the intercepts taking place at ranges up to 40 km from the launcher.
S-300PMU-2
The S-300PMU-2 is the most advanced S-300P system and evolved from major technology upgrades to the S-300PM and S-300PMU-1. The system also incorporated technology migration from the concurrent development of the more advanced S-400 (40RCE) system, enabling easy integration of the S-300PMU-2 into the newer technology and networked framework of the S-400 systems.
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