Obsluha lokátoru, druhá světová válka, noviny - Specially trained operators can detect the presence of aircraft with this AAA sound locator, which acts as the 'ears' of the AAA arm of the Eastern Defense Command. The instrument guides the searchlight, pointing at the target by sending information electrically to a control station, which, in turn, points the light. ACME News photo dated January 6, 1943
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