I'm supposed to get Dish service on Wed. and the more I read the more confused I get. Im getting a 722 hd dvr and Im not sure about the second receiver but its a standard. I am having a 4 tvs hooked up, at night me and my 3 kids have 3 different tvs going. Will we all be able to watch something different while I record on the 4th tv? So essentially can we watch four different channels.
What you want to do is possible. The 722 is essentially two satellite receivers and one off-the-air digital receiver feeding two TVs. If you can get the digital local channels, it would be three receivers. If you can't. the 722 would be only two receivers and the second box would have to be a 2-TV dual receiver box also. And if four people want to watch four different programs, it would also have to be a 2-TV dual receiver box.
I tried to "simplify" the basics of a 722 in this long post on another thread
. I'm not sure I succeeded.
In any event, you need to know what model the other box is going to be before you could get a definitive answer. And you ought to know anyway so if the installer shows up with the wrong box, you'll know it. That does happen.