We found this circuit in the Linear Applications Handbook of the 1994 National Semiconductor. The transistor must be a high voltage type and the LM3900 power supply must be symmetrical.
This receiver of two transistors for the 3.5 MHz band was found in a circuit manual from the 80's....
This circuit was found in a 1966 EEE. The circuit can be implemented with modern general-purpose...
In the figure we have the way to obtain 500 gain from a FET. FETs can be BF245 or MPF102. The...