I don't really know what you mean by tech specs. I just took a DISH 1000.2 and attempted to position a SL3 LNB in exactly the same position as the removed DISH LNB. Nothing technical about it. The LNB horns are totally different so you have to look for another way to put the DirecTV LNB in the same position as the one removed. What I posted is a result of my best effort. I don't know anything else to say other than what has been posted.