I am new to this forum and am looking for some help. I have dish network with a 500 series dish and dual pro plus LNB. There are two coax cables that serve two dual recievers and thus 4 televisions. I want to extend my service to my lower level but I do not want to add more cable or another dish on my roof. Can the incomming coax from the dual pro plus be split and run to other recievers so I can supply more than 4 TVs? PLease let me know what equipment I would need to add to extend the network to my lower level.