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.
The frequency of this pulser depends on the capacitor and the characteristics of the relay. The...
We found this circuit in the May 1990 issue of Radio Electronics magazine. The circuit is powered by...
This circuit of old American documentation (1965) can be applied to any transistor. | Clique na...