The SOP-39310115-KM-I1 from ERAVANT is a Phase Locked Oscillator with Frequency 39 GHz, Frequency Stability ±5 ppm, Output Power 15 dBm, Reference Frequency 100 MHz, Supply Voltage 12 V. Tags: Module with Connectors, PLVCO. More details for SOP-39310115-KM-I1 can be seen below.