Hello and welcome!
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Originally Posted by jackball
I am in Atlanta Metro, I only want the major digital channels. I would also like no drop-outs except in severe weather. I especially want WGTV (PBS) to work. I would love to purchase and install one antenna (and ~40 ft of RG6 to two TVs). I would love to do this only one time.
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(I have at least ten trees +50 ft tall dispersed behind my house between my future antenna location and the NE transmitters.)
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can I split the baby in half and just mount a medium size red antenna in my attic or outdoor on the eave?
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You are only 6-10 miles away from most of the transmitters, so signal strength is not going to be an issue. The performance of your system will mostly depend on how much multipath (reflection off of tall buildings, trees, neighbors' houses, hillsides, etc.) is present in your environment and how many of those excess signal paths are being picked up by your antenna.
If you have very little multipath in the environment, then almost any antenna will do. If there is some multipath to worry about, then one way to make a system less sensitive to it is to use a directional antenna (because it picks up less of the excess signal paths).
I think a good compromise for your situation is to use an antenna like the Winegard HD7694P or Antennacraft HBU-33 in your attic. These are good for channels 7-69, which is all that you need, and are directional antennas that are small enough to fit in most attics. Do not use any amplifiers in your setup because your signals are strong enough to overload just about any amp on the market, and you just don't need it with signals this strong. You should have more than enough signal to split to your two TVs.