My DTV sat dish is on my apartment roof. If i decide to get Dish Network instead, would the Dish installer be able to use the same roof to TV installation? To be more specific, the Dish installer doesn't need to drill holes, he can just disconnect my DTV and use the same wiring for Dish. Once the Dish is hooked up on the roof, all he needs to do is connect the wiring to my TV. It is simple. When i say same line at DTV, i mean the separate Dish TV wiring but using the same access from roof to TV. Yes, i know i will have 2 dishes on my roof (but only using one) and won't have a problem from my landlord.