This circuit for signals up to 30 MHz can improve your reception in the medium and short-wave band. We found it in the Radio Electronics magazine of February 1989.
Figure bellow shows how n 4027 can be cascaded to form a divide-by-2. The maximum input frequency...
This circuit is from an old documentation making use of a 3,579,645 MHz analog color television...
This is one of those circuits that the designer often looks for, but has trouble finding. Its...