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 transistorized circuit with germanium transistors was found in a publication from the 1960s....
This is an old circuit, from 1997, when cathode ray kinescopes were still used in televisions. This...
This circuit found in a documentation of the 90s, uses integrated common at the time, but...