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If actual conditions match your TVFool plot, the C2V is plenty of antenna for your location. You do not need a pre-amplifier. Your weakest high-VHF station has a noise margin of 46 dB. With a bit better than unity gain on that channel, the C2V will have enough signal power at the antenna to supply several homes with enough signal if raw signal power is the only factor.
You probably will need an FM filter (or two) along with patience in selecting a mounting location. Do NOT drill any holes in your home until you've proven reception of all your desired channels.
Channel 11 is the most likely station to get 2nd harmonic interference from FM. The rest of the VHF stations will be susceptible to some degree, hence my recommendation that you might need an FM filter.
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