The RSO2031AM from Roswin is a Voltage Controlled Oscillator with Frequency 2031 MHz, Power 5.012 mW, Tuning Sensitivity 7 MHz/V, Tuning Voltage 0.5 to 4.5 Vdc, Phase Noise -122 dBc/Hz. Tags: Surface Mount. More details for RSO2031AM can be seen below.