The QPDO-E-100-8.4 from Qualwave is a Phase Locked Oscillator with Frequency 8.4 GHz, Output Power 13 dBm, Reference Power -3 to 3 dBm (Input), Reference Frequency 100 MHz, Supply Voltage 12 V. Tags: Module with Connectors, PLDRO. More details for QPDO-E-100-8.4 can be seen below.