Okay guys heres my problem. I have 2 boxes, a broadband modem and a line goin into the back of a tv. The line I got is one that was split from the front door one goin downstairs one up. I got the upstairs one. I only have one booster and it aint enough for signal strength. I tried buyin another one nd that didn't work, So i bought another one that didn't work. Can sum1 help me find out the problem with the booster, keep in my that I have one that works while every other one i get doesn't work. Any help appreciated.