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If you are looking for Ben H. Tongue’s Site “Technical talk about Crystal Radio design, late 1920's TRF Radios, antique Hearing Aids and Blonder-Tongue Labs”, or any of its contents, that Site may be found at http://www.bentongue.com/  Content is now divided into several Sections.  If you came to this page by following a now obsolete bookmarked link, please update it.

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