RG-6 coax cable is what to use and the connectors need to be on the ends of the coax. It's all standard stuff , the only way to get into trouble is keep splitting hairs until finally you get to the wrong hair. . You found the antenna and a tripod and part numbers and prices , And give information about the satellite dish at the other building even stating that the dish is not mounted directly to the building and they are using a hole through the wall for the cable that goes from the dish to the receiver , and you have a digital tuner to use with the computer , and now you are uncertain about the coax cable. !?