This is a commercial circuit from the year 1958. Transistors are germanium types and transformers and coils are hard to fild today. The circuit is destinated to the reception of medium wave stations.
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...