I got a dish 3700 rec and card from a friend who has not used it for a long time. I wanted to see if it works, so I tried hooking it up to an old Sony Direc that I have. Dual LNB. Works on the Directv box I have, but could not get any signal on the Dish box. I am assuming that I can use this dish I have with this 3700. There are selections for all 4 sats in the menu. Am I doing something wrong? Are the lnbs not interoperable between DTV and Dish. (I would not think so.) I just want to see if it picks up signal. Or do I need a Dish500 so it can see 119 and 110 at the same time? I AM NOT HACKING---in case that comes up. Just want to know if this box is dead. Thanks fellas.