Found in a publication for radio amateurs from the 1980s, this circuit amplifies signals in the 60 kHz band (VLF), Winding data from the ferrite antenna are provided along with the diagram.
Found with variations on this site, this circuit was taken from an American documentation from the...
This wide-range radiation monitor was found in a 1980s documentation. The circuit uses a diode as a...
This circuit was obtained from an Electronics World magazine from 1992. The circuit provides an...