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De Forest Receiving Sets -1920A

De Forest Receiving Sets -1920A.jpg Brandes Headsets -1925AThumbnailsFada Detectors -1922ABrandes Headsets -1925AThumbnailsFada Detectors -1922A

Classic modular plug-in design, more weight and size per kilocycle than anything else on the market. They just look really, really impressive! Published in the August, 1920 issue SCIENCE AND INVENTION.

Source: Magazine collector Steve Davis

Restoration by: magscanner