BAR LOCK radar

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	To oppose or discuss a nomination, please go to CZ:Proposed for deletion and follow the instructions. For the monthly nomination lists, see Category:Articles for deletion. BAR LOCK is the NATO reporting name for a Soviet-designed early warning and search radar, called the Soviet P-35M and P-37 by its designers. It is with a search radar with moving target indicator, intended to be at points requiring maximum defense, as part of an integrated air defense system (IADS) and used with individual S-200 missile (NATO: SA-5 GAMMON) surface-to-air missile battalions. BAR LOCKs were key components of the Iraqi KARI IADS. They operated in the frequencies designated E/F-bands by NATO. They 150 to 350 km range. Physicially, the system has a pair of rotating antenna systems mounted on trailers, along with the control van. Each antenna is a stack of 6 truncated paraboloids; the stack gives approximate elevation angle. Where low level coverage is required, they are typically supplemented by a SIDE NET radar E-band nodding height finding radar. The BAR LOCK is significant in Western electronic intelligence, as being the target of the first serious attempt to measure radar power. First power estimates came from photographic interpretation, followed, in 1958, by only partially successful measurements from a purpose-built electronic receiver in C-119 aircraft. These sysems were flown through Berlin aircraft corridors. References