This two-tube circuit, one of which is dual, tunes to medium wave stations so that the signals are fed to a headphone or amplifier. The circuit was found in a 1943 publication and is powered directly from the mains.

This two-tube circuit, one of which is dual, tunes to medium wave stations so that the signals are fed to a headphone or amplifier. The circuit was found in a 1943 publication and is powered directly from the mains.