We found this circuit for 330 MHz using PIC in the magazine Electronics Now of December 1994. The circuit uses components common at the time.
With a strong positive feedback (via a 10 M resistor) we can get the trigger setting for the...
The critical component of this circuit is the transformar. We found it in an 1980s documentation....
This old oscillator using germanium transistors has a high impedance headphone as inductor to...