The 75 ohm coaxial cable is still commonly used with external ATSC television antennas, satellite receivers, cable modems, and many other types of equipment. For best results with your RF connection, use this high-quality Quad-Shielded RG-6 Coaxial Cable from Monoprice!This cable is constructed with 75 ohm RG-6 coax, which uses two layers of copper braiding and two layers of aluminum foil to protect the data integrity from any stray RFI or EMI signals. The CL2 rating on this cable indicates that it complies with fire safety codes and insurance requirements, making it safe for use inside the walls of residential class buildings.*** 30-day easy returns. No restocking fee. Free lifetime technical support. Limited lifetime warranty. ***