Noticed that one person said they used direct tv, which is what we use. I had noticed that using the A-B box to switch from satellite to over the air antenna disconnected the satellite antenna from the received so that when switching back the system had to reboot. So I took a different tact than anyone else I have heard about.
I ran a dedicated satellite cable from the roof down through the wiring harness out the bottom of the MH, followed the original wiring to the slide. Ran new cable into the slide putting a splitter in the compartment under the slide (side note: use one outlet out off the splitter for outside tv). Ran the cable into the compartment under the tv. That is where I put our DVR and the power inserter. At the splitter under the slide I took another cable and ran it the length of the motorhome underneath and into the compartment under the bedroom (very rear compartment passenger side of coach). Put in another splitter and ran one side through the floor and closet up into the cabinet over the closet. That is were I put our other satellite set top box, in this case a Genie. The feed from both satellite boxes to the tv's is HDMI. Now I have satellite programming front and rear and also I can use the very rear splitter to run satellite in in the even we are under trees and the roof top antenna is blocked. I leave the roof top antenna off and put up a tripod mount antenna.
Additionally I hooked up the park cable input into the back of the over the air booster. This way I have totally eliminated the A-B box. To use park cable just turn off the booster. We can run Over the Air, Park Cable and Satellite without the signals stepping on each other. We have a standalone satellite system.
Hope you folks and understand my explanation. Was a worthwhile upgrade and only took me a few hours to do it.
JimF, CWO, US Army Ret, 100% DAV
2011 Georgetown 378TS
2008 Dodge Caliber Toad