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 circuit can provide several watts of output depending on the pair of transistors used. BD135...
The source of the figure was found in a 1981 magazine and is recommended for the experimenter's bench. The...
August 2016 –It can be purchased from Mouser Electronics the new converters BD7F100 and BD7F200...