This QST circuit generates 4 frequency signals according to the crystals used. Transistors admit equivalents although the indicated types can still be found with some ease.
This traditional triplier configuration with the 555 can be found in other articles on the...
This transistorized oscillator, a modification of the Colpitts oscillator, was found in the...
This circuit is from 1995 documentation. The power depends on the transformer, which in this case...