It is built around a surface-to-air missile with command guidance. Following its first deployment in 1957 it became one of the most widely deployed air defence systems in history.

The S-75 Dvina (Russian: С-75; NATO reporting name SA-2 Guideline) is a Soviet-designed, high-altitude air defense system, built around a command guided surface-to-air missile. Since its first deployment in 1957 it has become the most widely deployed air defense system in history.

The Sikorsky S-75 was a proof-of-concept all-composite helicopter. Sikorsky Aircraft used all- composite materials to replace metal to provide greater strength, lighter weight, lower manufacturing costs, and reduce maintenance costs.

Superdex 75 Increase resin is based on a high-flow agarose base matrix with good pressure/flow properties. The small bead size with a narrow size distribution allows for high-resolution separations. In addition, low nonspecific interactions permit high recovery of biological materials.

A fearful high-altitude air defence missile system of its time, We are investigating the S-75. #s75 #sa2 #missile #airdefenceWhy did the USSR need to develop...

The S75 shall meet Type 2.C specification requirements established by the Erosion Control Technology Council (ECTC) and Federal Highway Administration’s (FHWA) FP-03 Section 713.17

· Step Enable the Bluetooth pairing mode on your phone device, search and select "S " to connect. (You should hear a voice prompt "Connected" when wearing earbuds). · Automatic connection By default, the earbuds will connect the last paired phone automatically when power on. Now discoverable as “IPhone”.