The exams cover a broad range of hardware and broadcast technology, but are not limited to specific brands of products. The CSI covers: satellite communications history & theory, satellite dish reflectors, cabling, amplifiers, satellite dish feed-horns-LNBs & LNBFs, Satellite System Installation-site surveys, satellite receivers-digital technology, interfacing with other consumer electronics equipment, transmission-internet systems, troubleshooting, repairs, sun outage, and safety. Four endorsements are also available. Antenna (CSI-A)-roof top antennas, towers, and rotors. C and Ku Band (CSI-C/Ku)-aiming, installation and troubleshooting of large-dish systems. Commercial (CSI-COM)-VSAT and other commercial satellite systems including internet two-way units. S-MATV (CSI-SMATV)-satellite antenna signal distribution systems for multiple unit dwellings including cable-type headends.