I have two dishes with a total of 3 lnbs. What I would like to do is have one switch out at the at the big dish under the lnb cover to switch between c and ku bands. One cable comes from this dish into the basement. I have another dish which also has one cable into the basement. Where the two cables meet I would like to have another switch. All of this controlled by one receiver. Can I do it? Or do I go to the trouble of running another cable underground out to the big dish?