Any help would be appreciated. I take a receiver from my house and attach a 2nd dish to tailgate with. Do I have to run a check switch before I begin to aim the satellite or find the satellites first? I read somewhere that the signal meter on the tv will not work correctly if a check switch has not been performed, but also read a check switch cannot be preformed properly if the receiver is not receiving a signal. These seem to cancel each other out to me without purchasing a separate signal finder.