This young woman and her faithful canine companion are pulling in a program from a distant station thanks to the very sensitive and selective three-tube superheterodyne receiver described in the July 1940 issue of Popular Science,

For added sensitivity, the detector is regenerative. Only one IF coil is used, meaning that the set can easily be aligned for peak performance. If a strong station is present in the area, then the article showed how to add a volume control in addition to the regeneration control shown in the circuit.