The V844ME05-LF from Z-COMM is a Voltage Controlled Oscillator with Frequency 3970 to 4150 MHz, Power 1.995 mW, Tuning Sensitivity 65 MHz/V, Tuning Voltage 0.5 to 4.5 V, Pulling 8 MHz. Tags: Surface Mount. More details for V844ME05-LF can be seen below.