The CVCO55BE-1680-1740 from Crystek Corporation is a Voltage Controlled Oscillator with Frequency 1.68 to 1.74 GHz, Power 3.981 mW, Tuning Sensitivity 28 MHz/V, Tuning Voltage 0.5 to 4.5 V, Pulling 11 to 13 MHz. Tags: Surface Mount. More details for CVCO55BE-1680-1740 can be seen below.