This circuit covers the bands from 1.8 to 150 MHz, with plug-in coils whose characteristics are given next to the diagram. The FET can be a BF245. We found it in old documentation.
We found this circuit in the Radio Electronics magazine of February 1993. The main integrated...
Found in old American documentation, this circuit that can be used as a shield, activates two...
This circuit is more sensitive than the previous one (CB4118E) for using a full wave detector. The...