The circuit is from 80s Siliconix documentation. The integrated circuit is from the company and is not common today. It can be used operational equivalent more common in our times.
The galena XTAL is replaced by a germanium diode in this Project. Diodes such as the 1N60 or 1N34...
We found this circuit in the January 1992 issue of Radio Electronics magazine. The circuit...
This circuit was found in old publication from 1958. The circuit uses germanium transistor, common in...