This circuit is from a Radio Electronics from April 1964. The circuit uses power transistors of the time, which must be mounted on a good heat radiator. Modern equivalents can be used.
This circuit is for analog TV video signals and was found in the March 1988 issue of Radio...
The signal itself captured by the (long) antenna serves to feed this simple experimental circuit....
Although this project has only 3 digits, nothing prevents it from being modified to operate with a...