This circuit, found in a 1958 magazine, is for reference only, since the components are not easy to find today. The transistors are germanium types and power supply is made by common cells.
This circuit was found in a PE Hobbyst Handbook of 1989. It uses a black light fluorescent of the time....
What is a dual frequency generator for? There are several possibilities of use for this circuit. The...
The project presented in a 2009 documentation is intended for radio amateurs operating in the...