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.
April 2017 - Already obtained at Mouser Electronicsthe new Molex miniDImm sockets according to...
Lamps in the range between 20 and 50 mA can be used. Voltage supply is according the lamp and...
We found this circuit in the May 1989 issue of Radio Electronics magazine. The circuit uses...