The CVCO55CC-0777-0880 from Crystek Corporation is a Voltage Controlled Oscillator with Frequency 777 to 880 MHz, Power 0.631 mW, Tuning Sensitivity 35 MHz/V, Tuning Voltage 0.1 to 4.9 V, Pulling 0.5 to 1.5 MHz. Tags: Surface Mount. More details for CVCO55CC-0777-0880 can be seen below.