I have a Multi Satellite 3 LNB, non-SWM antenna for my motor home, and take a DVR on the road with me for my main TV. I have to reconfigure it to single tuner, then reverse the process when I get home. I suppose I could run an additional cable from the antenna to the DVR, but that's not easy. Is there a way to use the signal from one cable to feed both tuners? I see satellite splitters and multi-switches out there, but don't know if these will work. Ideally, I'd like to put something right before the DVR to "split" the signal.