My parents purchased a huge satelite dish (I guess analog) system in the early nineties, but a few years later chose to have it disconnected because they preferred to have cable television. Both parents are deceased and I have no idea who installed the satelite dish or what is the satelite system's brand name. I still have the two receivers and there are cables through the house, both regular cable television and satelite. The only name I see on the receivers is Viacom. My question is how can I find out if the satelite system is still operable. I'm in the process of selling the house and this information would help in the market value of the house. PLEASE HELP ME.