The CVCO55CW-0400-0800 from Crystek Corporation is a Voltage Controlled Oscillator with Frequency 400 to 800 MHz, Power 10 mW, Tuning Sensitivity 47 MHz/V, Tuning Voltage 0 to 12 V, Pulling DC to 3 MHz. Tags: Surface Mount. More details for CVCO55CW-0400-0800 can be seen below.