File talk:Blattnerphone recorder 1937.jpg

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This is not a Blattnerphone: it is a Marconi-Stille from 1935. See Pawley, BBC Engineering plate page XVIII. Delverie (トーク) 14:06, 7 November 2018 (UTC)[返信]

Photos of the Blattnerphone (Eric Martz (トーク) 16:15, 27 February 2022 (UTC) who is not an expert)[返信]

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