The HORUS 2000 is a dual RF front-end circuit board that can independently receive GPS, GLONASS, and Galileo signals from passive or active antennas. It features a programmable fractional-N synthesizer with integrated VCO, programmable IF frequency, and support for a wide range of reference frequencies. The front-end requires no external IF SAW or discrete filters and has a total voltage gain of 100dB with 1.4dB cascade noise figure.