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.
Data applied to the input of this circuit is shifted one ceII to right following the clock pulse....
We found this circuit in a Popular Electronics of the 90s. Its purpose is to detect when it locks...
To a 16-0hm load, this amplifier provides a power of 10 W. We found this circuit in a Motorola...