The integrated circuit used in this application is uncommon today. The circuit is from American documentation from the 1980s. It can be changed to use more modern equivalent components.
This circuit was found in an Electronics Now from the 90s. The frequency depends on the crystal. The...
This circuit is from a 1976 technical documentation. In it we have the way of tuning a circuit using...
Mouser Electronics is supplying the SMi (Silicon Microestructures) uncompensated low pressure...