The CVCO55CL-1487-1587 from Crystek Corporation is a Voltage Controlled Oscillator with Frequency 1.487 to 1.587 GHz, Power 3.981 mW, Tuning Sensitivity 40 MHz/V, Tuning Voltage 0.3 to 4.7 V, Pulling DC to 4 MHz. Tags: Surface Mount. More details for CVCO55CL-1487-1587 can be seen below.