Thanks for all the information, but I'm still not quite sure how to proceed. First - a little more about my system. I have three dishes, a 6 ft, a 4 ft and a 3 ft shooting at 110, 119 and 148 respectively. They're connected to a powered SW-64 switch with three
Invacom quad LNBs directed to a DISH receiver. The low-powered side of the quad is directed to a splitter with the unpowered side sent to a 4 x 1 switch and then to a Pansat 2700. I've got great signal using a 4 ft aimed at T5 @97 but have to bypass the 4 x 1 switch. It makes no difference which LNB - a quad tied to one of the linear ports, or an Invacom uni.single or a DMS International standard KU. None of them work through the 4 x 1 switch, although I have set the Pansat software for a different DiSEqC port and changed the type of LNB.