This 455 kHz IF calibration circuit uses a 4,096 MHz crystal. The circuit can be powered by voltages from 5 to 9 V.
This circuit was found in a 1980s Intersil documentation. The integrated circuit used is not...
Although it is a common configuration today, these circuits were taken from an old publication. The...
This circuit, from an old publication, can also use modern transistors. Note that the unit is...