This 1960s Japanese receiver uses 6 germanium transistors, being powered by a 6 V voltage obtained from large batteries. The circuit is for the medium wave range of the superheterodyne type.
This circuit stores the input voltage at each control pulse in the capacitor. One of the common...
This transmitter with counterphase oscillator was obtained in a documentation from the 90s. The...
We found this circuit in the November 1984 Radio Electronics magazine. The base frequency is given...