This high performance block upconverter is intended for use in professional applications in X-band such as satellite earth stations. The BMCU67 includes a single conversion upconverter stage with appropiate filtering, a low phase noise local oscillator, a microprocessor based monitor and control circuitry, and power supply. BMCU67 can be controlled via RS422 and Ethernet. External reference and power supply has dedicated connectors. This block converter is housed in an outdoor IP67 rated cabinet.