Eighty five years ago, the February 1937 issue of Popular Science carried the plans for this two-tube regenerative receiver for the broadcast band up to 65 meters (about 4.6 MHz) with two plug-in coils. The set used two type 49 tubes, with the first one reflexed to serve as both RF and AF amplifier. The second tube served as regenerative detector.

The remarkable part of this receiver was that the B+ was only 11 volts. It used two dry cells for the filaments, which were also hooked in series with a 7.5 volt battery. The magazine noted that this made the receiver ideal for portable use, since the batteries were small enough to be carried in a pocket.