I can't use the loop out port on my cw700s because when I do all my channels go to scrambled. If I hook up a cable from the out loop of my cw700s to my dn receiver even if the dn receiver has the power off my signal strength drops about 10% on my stb I tried using a ab switch, disq switch but nothing seems to work.The reason for doing this is to make it simple to switch boxes over when we have a new ecm and I'm waiting for the new fix.Does anybody know if there is a good in-line signal booster out there that would help this problem?Do signal boosters really work?Thanks for any in-put on this problem.=)