Oh yes it would. RG59 doesn't have enough bandwidth to handle satellite. Make sure its RG6 down the line. In fact, if you can take the offending box to the multiswitch with a small TV, connect it with a short piece of RG6. That way you know if its the wiring in the walls or the multiswitch.Pancake Wagon said:All the boxes are out in the open, not in cabinets.
All the cabling to the boxes is RG6. From the boxes to the tvs there may be some 59, but that shouldn't effect the channels.