The VTO-4500-67 from NI Microwave Components is a Voltage Controlled Oscillator with Frequency 3 to 6 GHz, Power 10 mW, Tuning Sensitivity 125 to 350 MHz/V, Tuning Voltage 0 to 20 V, Pulling 20 MHz. Tags: Module with Connectors, Surface Mount. More details for VTO-4500-67 can be seen below.