With this circuit it is possible to measure RF signals with a common multimeter. Signals up to 200 MHz can be detected. The diode supports general-purpose equivalents.
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...