The CLV1277A-LF from Z-COMM is a Voltage Controlled Oscillator with Frequency 1213 to 1341 MHz, Power 2.239 mW, Tuning Sensitivity 41 MHz/V, Tuning Voltage 0.5 to 4.5 V, Pulling 2 MHz. Tags: Surface Mount. More details for CLV1277A-LF can be seen below.