The CVCO55CC-1623-1678 from Crystek Corporation is a Voltage Controlled Oscillator with Frequency 1.623 to 1.678 GHz, Power 3.981 mW, Tuning Sensitivity 20 MHz/V, Tuning Voltage 0.3 to 4.7 V, Pulling DC to 2 MHz. Tags: Surface Mount. More details for CVCO55CC-1623-1678 can be seen below.