To the OP and others who don't seem to know:
YOU DON'T NEED TWO LNB'S TO GET PROGRAMMING TO TWO TELEVISIONS
My set up has a SINGLE LNB on both the dome AND my external dish. Must I post a picture..:h.
I have a DVR for the living room TV AND a DVR for the bedroom TV. I can watch/record whatever I want on EITHER TV. They are INDEPENDENT of one another. Run your wiring as I indicated ABOVE and your system will do exactly what you want it to do. The multiplex switch is less than $12 and the A-B switches are $6 ea on eBay. They are PAB-2 Eagle switches. For $24 bucks you're done.....Dennis