Advertisements I have a older 3 LNB dish. 2 coax leads go into the attic to feed one SD DVR receiver upstairs while 2 coax leads go into the basement to feed another SD DVR downstairs. Can I connect a mult-switch to the 2 leads in the basement to add another DVR. Or do I need all 4 leads from the dish to feed into the switch and have all the receivers feed from it? Any advice would be greatly appreciated. Thanks.