The SOP-39310129-KF-E1 from ERAVANT is a Phase Locked Oscillator with Frequency 39.2 GHz, Output Power 29 dBm, Reference Frequency 100 MHz, Reference Power 0 dBm, Supply Voltage 12 V. Tags: Module with Connectors, PLVCO. More details for SOP-39310129-KF-E1 can be seen below.