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[AACS direction finding installation in Changyi, China] (Item)

Photograph of an AACS (Army Airways Communications System) direction finding installation in Changyi, China, circa 1940s.Typed on verso: "Above is a Direction Finding Installation at Changyi, prefabricated in the United States and sent over 'The Hump' in parts. Installations like these helped the Army Airways Communications System in China to make the airways secure against faulty navigation.…