My house was wired for cable to 3 rooms back in the late 80s when it was built, so I assume that's RG59. When I bought the house a few years ago, I had Dish installed and had another coax line run to the master bedroom for the TV2 feed, since I was already using the existing coax run to the bedroom for my HSI. I hope that when the installer made that run, he used RG6, as that would probably be my only RG6 coax going into my house. Stupid question time...how can I tell what kind of cable it is by visual inspection? I know little about RG6/RG59 except that I will need RG6 for the connection to the Hopper if/when I get it.