This oscillator was found in the January 1987 issue of Radio Electronics magazine. The frequency is adjusted by C1, and the output has good symmetry. The power supply is typically 3 to 12 V.
This circuit was obtained in a 1990 documentation and can be powered by the previous circuit...
This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz....
This oscillator with different outputs has frequencies selected by the S2 switch in 3 bands. We...