I live in Beaumont, Texas (zip 77702). I'm 70 miles from the PBS station serving Lake Charles and 90 from the one in Houston. All other networks are not an issue, their transmitters are all around 10 miles away, within 8 degrees of the Lake Charles PBS station. At night, I get clear reception from both PBS stations (signal strength reported on my TiVo Bolt of around 45-50), but during the day, both drop below 35 and won't lock. Antenna situation: One old-school 24x30 grid, one new cheap antenna (http://www.amazon.com/gp/product/B00502KFNK) Both attic-mounted, ~25 feet off the ground, 4 or 5 feet apart. Terrain is flat, but with heavy tree coverage. Antennas are pointed almost in opposite directions -- 72 degrees and 247 degrees Currently running through independent 50ft RG6 lines to a media closet, where they are combined and sent into the TiVo. I don't currently have them amplified. One of the antennas has an amp / motor unit but I'm not using it at the moment. I'm wondering if a pre-amp like this one will help bump me over the edge to get good reception of one of the two of these stations during the day? http://www.amazon.com/PCT-BI-DIRECTIONAL-AMPLIFIER-BOOSTER-PASSIVE/dp/B000F28DP2/ Given the way the Bolt reports its signal strength (starting low and going up), it makes me wonder if it has built-in pre-amp with automatic gain. If that's the case, what is the gain and noise level of that pre-amp? Also, I've heard some discussion of TiVos showing a diagnostic screen with the S/N ratio, but all I get is signal strength. Is the Bolt missing this information?