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S-300PS vs S-400: how to tell them apart

Two versions of the same family. Name the wrong one in Spotrep and you still get family points, but the exact model scores most.

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S-300PS

Air defence system, Soviet Union. In service since 1985

What gives it away

Large eight-wheeled truck carrying four tall cylindrical canisters raised upright to fire.

Used by

Russia, Ukraine, Belarus, Kazakhstan and others

S-400, air defence system from Russia

S-400

Air defence system, Russia. In service since 2007

What gives it away

Semi-trailer with four long cylindrical canisters, towed by a separate tractor unit.

Used by

Russia, China, India, Turkey, Belarus

Photo: Vitaly V. Kuzmin, Wikimedia Commons, CC BY-SA 4.0
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