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The SCR-784 was a radar set used by the U.S. Army.It was a mobile version of the SCR-584, used to control the fire of anti-aircraft batteries, [1] and mounted on a searchlight trailer called a K-84.
M1918 shop trailer, 4-ton; G-7 M2 light tractor Caterpillar model 20. G-7 M2 light tractor, Caterpillar Inc. model 20; G-8 M1918 body repair (3-ton FWD chassis) G-9 Items common to two or more group G items; G-10 M1918 light repair truck, Dodge; G-11 M1918 anti-aircraft gun trailer, 1 + 1 ⁄ 2-ton; G-12 M1917 tank, Renault FT; w/ 37 mm gun ...
The 8 kilowatt, direct current generator that powered the searchlight was driven by a six-cylinder, BMW engine, of a type used in pre-war cars. Typical tactics were to sweep the search light in an S-shaped pattern along the targets' expected course with the beam dispersed, once the target was detected, it was then tracked using the focused beam ...
The searchlight also found a niche for use by night fighters and anti-submarine warfare aircraft. The Turbinlite was a powerful searchlight mounted in the nose of an RAF Douglas Boston light bomber , converted into a night fighter to shoot down Luftwaffe night bombers .
The SCR-268 was one of the first radar sets to use lobe switching of its receiving antennas as a means to aim AA (anti-aircraft) searchlight beams at aircraft. Since it did not lobe-switch its transmitted signal it would be classed as one of the first LORO ( lobe-on-receive-only ) radars.
The resulting design fit into a single trailer, could provide all-sky search and single target tracking, and followed the targets automatically. In close contact with the Rad Lab, Bell Telephone Laboratories was developing an electronic analog gun-director that would be used in conjunction with the radar and servo-actuated 90 mm anti-aircraft guns.
Generator carrier for anti-aircraft searchlight, usually towed Sd.Kfz. 247 Ausf. A Krupp built ten Ausf. A models on the chassis of its six-wheel Krupp Protze truck in 1937. Sometimes anti-tank (37 mm Pak 36) and anti-air (2 cm Flak) guns were mounted directly on the truck bed .
The Carmarthenshire Fortress Royal Engineers (CFRE) was a coast defence unit of Britain's Territorial Army formed after World War I.In World War II, it provided an anti-aircraft searchlight unit that served during the early part of The Blitz, and then during the Siege of Malta.