Hello and welcome!
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Originally Posted by SoonerDude
I've had a few friends build the homemade DB4 antenna that's all over the web, but after some reading, I see it's only UHF. I think I'm likely going to need a decent sized outdoor antenna on my roof.
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You're absolutely right. The 4 bay bowtie antenna is really only good for UHF. It looks like you have two high-VHF stations, KOCO (ch 7) and KETA (ch 13).
The good news is that your signal strengths are good and all of the major transmitters are clustered together west of your location. This will make it easier to get all the channels with a straightforward antenna setup.
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I live in a pretty heavily wooded area, not sure how much trees hurt the signal.
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Yes, trees can have an effect on TV signals. They can absorb some signal and will also cause some signal to bounce around (which can also hurt reception). The radio properties of trees vary by type, spacing, water content, and how much they blow around in the wind, so it's really difficult to tell how much they will impact you until you actually try it.
Since all of your channels fall within the range of channels 7 thru 69, your situation is perfect for the Antennacraft HBU-22, 33, 44, or 55 family of antennas, or the Winegard HD7694P, HD7695P, HD7696P, HD7697P, or HD7698P family of antennas. These are all specifically designed to handle the limited channel range of 7-69 (helps make the antenna a little smaller) and range from small to large sizes depending on the strength of your signals.
For your situation, I'd recommend either the Winegard HD7696P or the Antennacraft HBU-44. Under ordinary circumstances, your signal strengths are good enough such that you could use a smaller antenna. However, since you mentioned the possibility of dense tree blockage, I'm recommending these slightly larger versions of the antennas. The larger you go, the more margin for error you will have to deal with the unknown variables in the environment.
Install the antenna on the roof and point it at a compass heading of about 282 degrees and you'll be set.