This interesting receiver with a loop antenna and a single tube was found in documentation from 1943. The tuning range is medium wave. The headphone must have at least 2000 ohms of impedance. The circuit is powered by two low voltage batteries.

This interesting receiver with a loop antenna and a single tube was found in documentation from 1943. The tuning range is medium wave. The headphone must have at least 2000 ohms of impedance. The circuit is powered by two low voltage batteries.