First of all I have dish network and it's pointing to sat. 110 & 119, when I hook up my dual lnb on the 3X4 switch, I lost all my channels from sat 119 and some from 110. I get a message saying "no signal". I tried hooking my 2 receivers on out1 and out2 and then I tried out3 and out4 and I get the result. When I eliminate the switch everything goes back to normal.