Found in the 1976 Siemens transistors manual, this circuit works with AM or FM IF signals. In the diagram information is given for the coils.
Found in a Popular Electronics of the 90s this configuration can be seen elsewhere on our site....
This very high input impedance JFET circuit was found in the 1995 Encyclopedia of Electronic...
This amplifier for automotive use is from the Philips Databook of 1990. The integrated circuit must...