My situation: Got my Directv HDDVR yesterday; installer had never installed one before, so I am not sure he did it correctly (he's not sure he did it correctly). I have the HDDVR, a DVR, and a standard receiver. He installed the dish with a triple LNB, took those four cables and went to a 4x8DTV Multiswitch and then to the receivers. The HDDVR is receiving a signal strength of 98 on satellite 101, but absolutely nothing on the 119 and 110 (the HD right?). I may have some tree obstruction, but if I get that good a signal on 101, shouldn't I get anything on the other two even with some obstruction? I have searched the forums, but want to be sure. Thanks for any help.