Hello everyone, it seems I can barely break a 50% signal with my zenith silver star HD antenna, so I want to upgrade. First, does anyone know what color category the silver sensor falls into? According to this chart, I want to get either a blue or violet (I'd rather get the best and not have to worry about my signal). If I get a violet antenna, will it not work without a pre amp? I will have to run it over a 400-500 foot cable. Can anyone reccomend a good antenna? With the cost of RG 6 cable, I don't want to go over 150 dollars (I understand the MSRP on the site is high, but I searched on google and found better prices, around half). Thanks