here is my latest info: hooked an sdr up to each swm16 port going to the LNB SWiM16 and the picture. Top to bottom 18v 13v 18v22khz 13v22khz looks like two identical pair? when performing the test all 4 lnb wires are hooked to swm16. i only unhook one at a time and having the splitter goto sdr. the other 3 cables i leave plugged in. i did that to each port. should i try testing with none of the swim16 lnb ports connected except the one under test?