This circuit was found in an ancient American documentation. With it is possible to double the frequency of a transmitter For the range of 6 meters obtaining 8 W. The circuit makes use of varicap.
The circuit presented was obtained from an Electronics Now magazine from February 1995. The...
This circuit was found in a Popular Electronics from the 90s. It is based on components still...
This circuit can be used with older tape player systems to recover media converting for digital...