This circuit for analog VHF televisions was found in the 1989 Radio Electronics Experimenter magazine. It also works for FM receivers.
This is one of the many versions of this type of indicator that the reader can find on our...
This circuit is from a manual of linear integrated circuits of the 80s. The operational is of the...
This circuit has a 100 dB dynamic We found it in a Popular Electronics from the 90s. Equivalent...