Technical support in drafting the technical specifications of the SGB, the multi-mission Brazilian Geostationary Satellite, planned by the Brazilian Government to provide sensitive government and military communications, in addition to a meteorological payload composed of an imager in the visible and infrared spectrum with 16 spectral channels. The work included technical specifications for the satellites, the control center, and the telemetry and command earth stations in the C, Ku, and L frequency bands.