The QPDO-I-100-0.9-2.1 from Qualwave is a Phase Locked Oscillator with Frequency 0.9 GHz, 2.1 GHz, Output Power 10 to 20 dBm, Frequency Stability ±1 ppm, Reference Power -3 to 0 dBm (Output), Reference Frequency 100 MHz. Tags: Module with Connectors, PLDRO. More details for QPDO-I-100-0.9-2.1 can be seen below.