This circuit was found in an Electronic Experimenter Handbook from the 90's. The coil can be formed by 4 turns of wire 28 with 0.5 cm diameter without core for the FM band.
Found in National Semiconductor documentation from the 90's, this circuit has an output current of...
With this circuit it is possible to raise the characteristics of a transistor by checking its gain...
The circuit presented is from the Linear Applications Handbook of the National Semiconductor of...