This small commercial radio for the MW band with germanium transistors was found in Japanese documentation from the 1960s. The circuit is powered by a 9 V battery and has a 455 kHz IF.
This shield circuit for lamps and other charges was found in a Popular Electronics from the 90's....
Using the well-known 2N2646 that was popular at the time, this circuit was found in Radio...
We found this circuit in a Popular Electronics of the 90s. The circuit can also be used as a seat...