Installing an outside OTA antenna (for my local St. Louis channels) which will be connected to the OTA adapter that will connect to my Hopper 3 and I want to install the correct coax. I know it should not be RG59 and to use RG6 but I've found two different RG6 coax. This article at What's the Difference?: RG6 vs RG6Q - Syston Cable Performance Beyond Expectations states "G6 Quad Shielded cables (RG6Q) and RG6 Dual Shielded cables (RG6) are both coaxial cables. But RG6Q and RG6 cables are not interchangeable." Which do I need for this installation? Thanks.