This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.
This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz....
This circuit was found in the November 1992 Radio Electronics magazine. The resistor in series with...
This circuit was obtained from an American publication from the 80's. We can use a BD136 instead...