The crystal in this circuit can have frequencies from 100kHz to 8MHz. Capacitor C2 adjusts the oscillation point. The transistor can be the BC548 or BF494. Capacitors must be ceramic. The circuit is from an English publication from 1980.

The crystal in this circuit can have frequencies from 100kHz to 8MHz. Capacitor C2 adjusts the oscillation point. The transistor can be the BC548 or BF494. Capacitors must be ceramic. The circuit is from an English publication from 1980.