The DCO4351-8 from Synergy Microwave Corporation is a Voltage Controlled Oscillator with Frequency 430 to 510 MHz, Power 1 mW, Tuning Sensitivity 35 to 55 MHz/V, Tuning Voltage 0.3 to 3 V, Pulling 3 MHz. Tags: Surface Mount. More details for DCO4351-8 can be seen below.