The SOP-19310013-SF-BB from ERAVANT is a Phase Locked Oscillator with Frequency 18.8 GHz, Frequency Stability ±5 ppm, Output Power 13 dBm, Reference Frequency 10 MHz, Reference Power -3 to 3 dBm. Tags: Module with Connectors, PLDRO. More details for SOP-19310013-SF-BB can be seen below.