The PR3920E100492_A_en from Panda Microwave is a Phase Locked Oscillator with Frequency DC to 39.2 GHz, Output Power 4 dBm, Frequency Stability ±2 ppm, Reference Power 0 to 6 dBm, Reference Frequency 100 MHz. Tags: Module with Connectors, PLDRO. More details for PR3920E100492_A_en can be seen below.