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  2. SCR-270 - Wikipedia

    en.wikipedia.org/wiki/SCR-270

    A key innovation in the SCR-270 was a transmit-receive (TR) switch. The SCR-268 searchlight control radar, which shared much technology with the SCR-270, used separate antennas for transmit and receive, For maximum antenna gain at a given size it is desirable to use the same antenna for both functions. One obstacle is the need to protect the ...

  3. Searchlight - Wikipedia

    en.wikipedia.org/wiki/Searchlight

    A searchlight (or spotlight) is an apparatus that combines an extremely bright source (traditionally a carbon arc lamp) with a mirrored parabolic reflector to project a powerful beam of light of approximately parallel rays in a particular direction. It is usually constructed so that it can be swiveled about.

  4. Barn door tracker - Wikipedia

    en.wikipedia.org/wiki/Barn_door_tracker

    The barn door tracker was created by George Haig. His plans were first published in Sky & Telescope magazine in April 1975. Modified versions of the tracker were published in the magazine's February 1988 and June 2007 editions.

  5. German searchlights of World War II - Wikipedia

    en.wikipedia.org/wiki/German_searchlights_of...

    The 200 cm searchlight was deployed at the center of a triangle formed by the 150 cm searchlights. The smaller searchlights deployed at a distance of about 2.5 kilometres (1.6 mi) from the larger central "master" searchlight. The master searchlight would find the target, and the 150 cm lights would cone the target, providing solid triangulation.

  6. Battlefield illumination - Wikipedia

    en.wikipedia.org/wiki/Battlefield_illumination

    It was a tank fitted with a powerful carbon-arc searchlight to support night-time attacks. The War Office ordered 300 such lamps in 1940. [ 7 ] During the latter stages of the war, the British Army created Moonlight Batteries, Royal Artillery that specialised in providing 'artificial moonlight', otherwise known as 'movement light' or ' Monty's ...

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  9. Carlisle & Finch - Wikipedia

    en.wikipedia.org/wiki/Carlisle_&_Finch

    Carlisle sold his share of the business to Finch on August 4, 1926. Brent S. Finch, Robert's son, was named president, and the company started concentrating entirely on its searchlight business. After World War II, Brent R. Finch (son of Brent S.) was hired, at which point three generations of Finches were simultaneously employed by the company.

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