I'm having issues with HDTV reception in Northern San Diego County. TVFool report: tvfool DOT com/?option=com_wrapper&Itemid=29&q=id%3d903872fc264ff 2 Current set up is attic mounted Clearstream C5 for VHF and Clearstream 2 for UHF going to an RCA TVPREAMP1R combiner/preamp. UHF channels come in great all the time, however VHF channels 8 and 10 only come in during the day. At night or even during rain, they die completely. What's the best thing to do in this situation? Better VHF antenna? Better preamp? The signal strength is 100% on those channels when they work using the pre amp, and around 70% without the pre amp when they work. Thanks for any advice.