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 is one of the many approaches we have on the site for this low power 0.5 W amp using the...
June 2017 - Mouser Electronics has the new Texas Instruments OPA167x series operational amplifiers available...
IDT ZSSC3230 Capacitive Sensor Signal Conditioner Available from Mouser Electronics stock, this IDT...