Just finished setting up my first FTA system (KU Only). I like it and after seeing what I can get on C-Band I want one. I have a Omegasat5701 receiver. Now I would like to set up a 6 footer to get C-Band (It will be dual). Do I need to get another receiver??? Can I use the existing one. What is recommended? Loking into getting a WS1870P.