The other day I noticed I am loosing some HD channels. I went outside to look at the dish and noticed what looks like a cover missing on the lnb. I guess I need to replace the lnb assembly. My present lnb is the old 4 wire model. I was looking online and there is a single wire multiswitch model that comes with a 4 way splitter and power supply. I was wondering if it will work with my old RCA sat receiver which is in the bedroom? Also wondering what channels goes to the missing cover receiver on the lnb?