Found in a 1980s American documentation, this crystal-controlled oscillator generates 100 MHz signals. The crystal used is 20 MHz. Modern equivalent transistors can be used.
This circuit was found in an Experimenters Handbook of the 1990s. The purpose of this circuit is to...
Signals from old cordless phones can be picked up with this circuit. L1 has 10 to 20 turns of 32...
This emitter-coupled transistor LC oscillator circuit was found in the May 1970 issue of Radio...