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Stock Photo: Aeroplane Detector Devised During The Great War

ID 266898467 © Mjb6661 | Megapixl.com

Air Defences - Aeroplane detector devised during the Great War / WW1. It caught the faintest sounds from the direction in which it was turned, and by means of mircrophones carried them through listening tubes to the observer. An acoustic locator, vaguely resembling a tuba, used by Japan during the World Wars to provide early warning of incoming aircraft.

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Aeroplane detector devised during the Great War

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