This circuit was found in documentation from the 90s. The components used are not common today. The circuit can be adapted to employ modern equivalent components.
This circuit called “surf man” was published in the August 1992 Radio Electronics magazine. It...
This Hartley oscillator uses an audio output transformer that can be obtained from small, unused...
The oscillator shown in the figure can generate signals between 3 and 15 MHz approximately, depending...