A coaxial cable is a common type of data communication cable. There are many different types of coaxial cables. In hooking up a Comcast cable box, the Comcast manual specifies that you need a 75 ohm coaxial cable with F-type connectors.Click to see full answer. In this regard, what coax cable does Comcast use? RG6 Furthermore, what type of coaxial cable is best for internet? Top 10 Best Coaxial Cables 2020: Reviews By An Expert Electrician Product Name Editor’s Rating AmazonBasics CL2-Rated Coaxial TV Cable 5 out of 5 Cable Matters 3-Pack CL2 Coaxial Cable 4 out of 5 THE CIMPLE CO – 50′ Feet, White RG6 Coaxial Cable 5 out of 5 AmazonBasics Digital Audio Coaxial Cable 4.5 out of 5 Just so, do I need a coax cable for Xfinity? You do need a coax connection from the street to the location of the modem if you want to subscribe to conventional Comcast internet service. A Comcast installer would need to run the coax cable, but will need written permission from the landlord on a rental property.What types of coaxial cables are there? The common types of coaxial cable include: Hard line coaxial cable. Flexible coaxial cable. Semi-rigid coaxial cable. Formable coaxial cable. Rigid coaxial cable. Twin axial cable. Triaxial cable.