This circuit covers the bands from 1.8 to 150 MHz, with plug-in coils whose characteristics are given next to the diagram. The FET can be a BF245. We found it in old documentation.
This circuit was found in a 1960s documentation, providing a 2,000 gain amplified output. | Clique na...
Frequency in this oscillator is controlled by a crystal. Any 1 MHz to 15 MHz can be used. The JFET can...
This small source is suitable for low consumption equipment that uses batteries. The circuit is...