I currently have a 5 lnb dish in which an HR 20 is hooked up along with 2 SD receivers. D* is coming out on Monday to install a second HR20 to replace a SD receiver and place 2 more SD receivers so I will have a total of 5 receivers (2 HD and 3 SD). Can the one dish handle all 5 or will I have to add a second dish? I have heard of a multi-switch (just don't know if I have one). If I don't have a multi-switch, will the installer have one on the truck? Would a multi-switch been installed when I first got HD?