This receiver for medium wave range with germanium transistor was found in a documentation from 1966. Its power is made by a common solar cell from 0.6 to 3 V. The phone is 600 ohms to 2 k impedance.

This receiver for medium wave range with germanium transistor was found in a documentation from 1966. Its power is made by a common solar cell from 0.6 to 3 V. The phone is 600 ohms to 2 k impedance.
