I have a DB4e up on my roof. I was getting 22 channels with a zero gain (powered) splitter that was left here by Rogers. All I wanted to do was boost my signal so I could pick up WUTV Fox. So I bought a Pre-amp and passive splitter. I connected everything and now I only get 9 channels.
The only thing I can think of is that up at the antenna, a short cable from the antenna to the pre-amp is now cutting across the front of a section of the antenna. Might this be the problem?