I did discover after rescanning channels , that I am now getting 2 more stations, since installing the RS signal booster.I know it's supposed to be mounted on the antenna pole just below the antenna, but I am not prepared to risk my life to try and climb onto my roof & up the pole to do this. This antenna & pole were pre-exiting when I bought my house, and I haven't changed anything in the 14 years since I've lived here. I moved the booster closer to the antenna, and that did improve the signal, however, I'm still not getting all the channels I was getting before. The old Channel Master preamp was inline just before the tv, and was getting a lot of stations, not being installed where it should be, under the antenna. As per the question of which channels I am getting....they are WJZ (Baltimore,MD), channel 13.1 ( that's another weird thing...I used to get 13.2, 13.3, & 13.4, but now only 13.1) Also getting 43.1(WPMT York,PA), and 49.1, & 49.2(WGCB- Red Lion, PA).
I think I will bite the bullet, and get another Channel Master preamp...the CS 7777mentioned above. Thanks for all of your input. I'll keep you updated.