Lakegirl, your numbers look even worse than mine. You will definitely have to roof mount your antenna(s) and you will need a good tuner that can sort out a weak, filtered signal. My effort over the last three years at finding an ATSC tuner that will work in my location has been frustrating to say the least. My latest effort is a SiliconeDust Homerun which only worked reliably about half the year I have had it. I lost half my channels this spring as soon as the sap in the evergreens started rising. I currently use a DigitalStream DTX9950 ATSC tuner that works great year around but only outputs SD.