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.
This circuit was found in a 73 magazine for radio amateurs. Components are still common today. |...
The maximum frequency of the oscillator shown in figure 10 is on the order of 5 MHz, depending on the...
The operational amplifier used in this application obtained in a technical documentation from the...