Originally Posted by cal3030
Someone please explain why I see some homes with two or three Direct TV dishes.
Dish uses sats all over the sky for everything and pretty much requires multiple dishes for everything. DirecTV uses sats between 99 and 119 with one lone sat they own but they lease the slot from a Canadian company at 72 for smaller market LILs.
They have had 5 basic dish types in their existance. The single sat dish (101) (still in use today) they have used since day one that is used for SD. When LIL started in the late 90's and non English programming, that was on 110 and 119, they came out with the 3 LNB dish that covered 101, 110 and 119. There were two flavors, the short lived 3 individual LNBs and the more familiar 3 LNB integrated single unit dish.
Starting in 2006 when the Ka birds began to be launched and put into service at 103 and 99 for HD, they came out with the AT9 that was a hybid of the 3 LNB integrated dish that used one LNB for 99, 101 and 103 and two separate LNBs for 110 and 119. In 2007 the AT9 was phased out for the lighter weight Slimline that has 5 integrated LNBs on 99, 101, 103, 110, 119. For those subs in small markets with SD LIL, they need a second dish on 72 for their local channels in addition to either a single LNB dish or 3 LNB or Slimline. In CONUS, for every bird you only need 2 dishes and then only if you need the small market LIL. If you don't need small market LIL, you only need one dish for everything.
Subs in Alaska and Hawaii use a special larger dish due to their location on the Earth in relation to the orbital position of the sats at 99, 101, 103, 110 and 119 (72 has no look angle available in Alaska and Hawaii). That dish is normally not available to CONUS subs.