The MFC4151-12 from Synergy Microwave Corporation is a Voltage Controlled Oscillator with Frequency 410 to 510 MHz, Power 1.585 mW, Tuning Sensitivity 5 to 12 MHz/V, Tuning Voltage 0.5 to 15 V, Pulling 2 MHz. Tags: Surface Mount. More details for MFC4151-12 can be seen below.