9 Apparatus in the nature of computer hardware, satellite dishes, antennas, electronics in the nature of block upconverters, low-noise block downconverters and transceivers, modems for tracking and control systems, and structural and replacement parts in the nature of motorization and component parts thereof, all for tracking satellites; apparatus in the nature of computer hardware, satellite dishes, antennas, electronics in the nature of block upconverters, low-noise block downconverters and transceivers, modems for tracking and control systems, and structural and replacement parts in the nature of motorization and component parts thereof, all for tracking LEO and MEO satellites; apparatus in the nature of computer hardware, satellite dishes, antennas, electronics in the nature of block upconverters, low-noise block downconverters and transceivers, modems for tracking and control systems, and structural and replacement parts in the nature of motorization and component parts thereof, all for tracking LEO and MEO satellite constellations