Eighty years ago, the SWL shown here was exploring the ether with her three-tube shortwave set, as featured in the February 1936 issue of Shortwave Craft magazine. It featured one stage of RF amplification with a 6L7 tube, a 6J7 serving as regenerative detector, and a 6C5 serving as audio amplifier. The article points out that the “operation of the set is perfectly simple.” The set would tune 14-200 meters (1.5 – 21 MHz) with four plug-in coils.

The schematic and pictorial diagrams of the set are shown below.