This circuit for signals up to 30 MHz can improve your reception in the medium and short-wave band. We found it in the Radio Electronics magazine of February 1989.
This circuit was found in an English magazine from 1979. The magazine no longer exists, but the...
We found this circuit in a PopularElectronics of 1993. The circuit generates signals whose...
This circuit was found in an English technical documentation from 1973. The circuit generates...