Found in old American documentation, this circuit can use crystals between 27.5 and 33 MHz operating on the third harmonic. The transistor admits equivalent.
This step uses germanium transistors such as the AC151, GE2, and others having been found in a...
This circuit was obtained in an Electronic Design from the 80's. It has the adjustment of the gain...
We found this high input impedance, low output impedance amplification stage in the October 1993...