This circuit is from Electronics Now magazine, February 1987. The number of channels is high depending only on the distances of the stations and the losses in the cables.
This circuit was obtained in a Maxim documentation from the 90's. The circuit applies to...
Used in satellite TV receptions in the 1980s, this circuit was found in the March 1980 issue of...
We found this circuit in the April 2013 issue of Electronics Now. Any JFET can be used. Note the...