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Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie

Originally featured in a 1920s issue of the Newark Sunday Call, this receiver design relied on the Atwater Kent Variocoupler and Variable Condenser but was never officially authorized (or recommended by the company). The "DX" design utilizes a specific form of regeneration technically called "Variable Coupling Tickler Feedback." This circuit differed from the modified No. 3975 (which used a Variometer) by connecting a Variable Condenser across the primary coil and the aerial-ground circuit. There are known variants of this model with a single detector unit, or with TA Detector and single stage amplifier (as shown) or a TA with Detector, two-stage amplifier.

DX

REINHARD BROS

Beginning in 1922, Reinhard Brothers (a Minneapolis distributor) began assembling early receiver sets. These units actually predated Atwater Kent’s entry into factory production. Reinhard built these sets using official Atwater Kent parts mounted on thick, premium Bakelite sheets. It is widely believed that Reinhard's success proved the market viability of pre-assembled sets to Arthur Atwater Kent, prompting him to launch his own factory line. The example featured here is the only known surviving, all-original Reinhard set. (An additional Reinhard No. 3975 reproduction is featured here).

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie