This 500 MHz oscillator has an output power of 1 W when powered by a 20 V source. The circuit was suggested by RCA in a 70's documentation.
This circuit already explored in several diagrams in this section was found in a 90’s Popular...
The transistors of this circuit may be the BC548 or BC549 and its power supply can be performed...
The sensor of this circuit is an NTC with a resistance between 200 and 1000 ohms. The resistor R1 must...