looking at the OP's location he is in the Spokane market. All of his locals except for a 2ndary CBS are in HD. So if the OP only puts up a SL3 he would miss KLEW CBS
all the rest of his locals are in HD
CBS KREM 2 2
CBS KLEW 3
ABC KXLY 4 4
NBC KHQ 6 6
PBS KSPS 7 7
PBS KWSU 10 10
CW KSKN 22 22
PBS KCDT 26 26
FOX KAYU 28 28
all the rest of his locals are in HD
CBS KREM 2 2
CBS KLEW 3
ABC KXLY 4 4
NBC KHQ 6 6
PBS KSPS 7 7
PBS KWSU 10 10
CW KSKN 22 22
PBS KCDT 26 26
FOX KAYU 28 28