The CVCO55BE-2000-2100 from Crystek Corporation is a Voltage Controlled Oscillator with Frequency 2 to 2.1 GHz, Power 3.981 mW, Tuning Sensitivity 35 MHz/V, Tuning Voltage 0.3 to 4.7 V, Pulling DC to 11 MHz. Tags: Surface Mount. More details for CVCO55BE-2000-2100 can be seen below.