I am currently using the Stealth antenna and can get all of my OTA channels. One of my channels is located around 30 miles away and is the weakest channel that I receive. It seems like during the afternoon, the signal strength was around 40-50 and during the night it is 20-30. Am I going to have any problems with my signal being this low? I was wondering if these antennas are directional. The installer didn't optimize pointing the antenna but was just interested if I got a picture or not.