This circuit is from the 80's documentation. The integrated circuit is from the time but can be implemented with modern equivalents. The power supply must be symmetrical.
The frequency of this oscillator depends on the crystal used. The transistors are general purpose. We...
This circuit was suggested in an article in Radio Electronics magazine in January 1992. Other...
The coil of this receiver consists of 100 turns of wire 38 to 30 in a ferrite rod and the...