HD Over Coax CCTV systems, currently the most popular due to price and quality, also known as HDTVI (High Definition Transport Video Interface) or HDCVI (High Definition Composite Video Interface), or High Definition Over Coax, is an over coaxial cable analogue HD video transmission standard, with composite video, audio, and data control signals transmitted over one coaxial cable.
The installation is a simplified process using RG-59 cable installed over distances in excess of 500m. No repeaters or signal boosters are required to enhance performance.