This shortwave preselector was found in the July 1994 issue of Radio Electronics magazine. The circuit is suitable for telescopic antennas, matching the impedance with the receiver used.
This oscillator generates a fixed frequency signal determined by C1 and C2. In the case of 1 nF,...
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
This circuit with JFET and Unijunction was found in an ancient American documentation. The...