The BOVI63 from Bonn Hungary Electronics (BHE) is a Phase Locked Oscillator with Frequency 4.27 GHz, Frequency Stability ± 0.5 ppm, Output Power 13 to 15 dBm, Reference Frequency 10 MHz, Reference Power -6 to 10 dBm. Tags: Module with Connectors, PLVCO. More details for BOVI63 can be seen below.