AV-Cables.net 12GHz 4K UHD SDI cables are the next-gen RG59 BNC cables. Designed to handle 12GHz 4K UHD signals up to 150 feet and 3G HD SDI up to 300 Feet. These 12G UHD SDI cables provide the critical link between your switchers, cameras and other 4K video equipment. Hand assembled by our technicians featuring 4855R 4K Ultra-High-Definition Mini-RG59 coaxial cable and matching BNC connectors for 12G-UHD SDI. Features Designed for UHD and 4K Video Transport 12 GHz, 4K UHD Precision 75-Ohm Video Cable Optimized Transmission Distance for UHDTV Transmits up to 150 ft Return Loss: Guarantees -15 dB RL from 4.5 to 12GHz Meets SMPTE 424M, ST 2081-1 and ST2082-1 Standards