This circuit for medium and short wave range was found in an American documentation from 1992. The circuit can use general purpose transistors and the antenna can be external or telescopic.
This oscillator generates a fixed frequency signal determined by C1 and C2. In the case of 1 nF,...
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
This circuit with JFET and Unijunction was found in an ancient American documentation. The...