This crystal oscillator generates a 20 MHz signal. Equivalent transistors such as BF494 and 2N2222 can be used. The stabilizing diodes can be 1N4148.
This transmitter for the 2-meter range with a power of 1.5 W was found in a magazine 73 for radio...
The configuration shown in the figure is one of the most traditional when it is desired to produce...
This circuit operates according to the same principle as the previous one, but it has a difference in...