This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz. FET is old, but modern equivalents can be used.
We found this circuit in a Radio Electronics magazine from June 1992. The circuit has a power...
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...
This circuit is from a documentation from the 70s. The circuit uses logic gates of the time, which...