This transistorized circuit appeared in a Radio Electronics magazine in March 1958. The frequency range depends on the tuned circuit, being within a few megahertz.
This noise limiter for low intensity signals was found in a 73 magazine for radio amateurs from the...
The circuit shown in the figure uses a programmable unijunction transistor (PUT) of the BRY39 type...
Used with old projector films, this circuit found in Signalite documentation from the 1980s,...