I'm helping a friend out changing his current set up from a regular SL3 to a SL3 SWM set up. He lives in a condo that is prewired but has only one cable to each receiver so currently when he records a show he can't change the channel or the recording will stop. My question is will he be able to record one show and channel the channel with just the one cable coming into the receiver even if the does not get the Whole Home DVR set up/ monthly fee? Also he has HR22's so does he need the b band converter once he has the SWM?Also my understanding all I need is the SL3 SMW, power inserter and the splitter right?