I purchased a Magnavox 50" DLP HDTV with a bulit-in tuner(my first foray into the world of HDTV). The picture quality for DVDs and OTA HD channels is excellent. However, the channels from analog cable look worse than they did on my older Sony 61" RPTV (not HD). When running through my Panasonic DVD recorder or directly into the TV the picture is not a clear as before. I installed a 10db signal amplifier onto the cable coming into the DVD recorder (which is then linked to the TV) and it cleared up the horizontal lines that where showing up, but the picture quality is still poor. Is there anything I can do to improve the cable quality? The picture quality on my other non-hdtvs throughout the house are fine so it is not a problem with the cable.