This amplifier is from Motorola's 1990 Linear Databook. The circuit can be used with operating amplifiers with the same characteristics and the power supply must be symmetrical.
We found this project in a 2002 documentation. The transistor amplifier has a power of a few watts...
This circuit is from 1995 documentation. In the original, the source is symmetrical at 12 V, but...
Here we have a transceiver for the amateur radio range, which operates in the 40 m band (7 MHz),...