Thanks for the revised plots. 50' shows improvement as it gets many Atlanta broadcasts out of the negative signal strength #'s. 100' gets you upwards of and in some cases into double digits in positive signal strength.
I was hoping for better improvement than what your plot shows though.
It's a tough reception situation for sure. With the antennas on a 100' tower, you are still dealing with weak signals, albeit perhaps receivable ones. At 25' I'd be pessimistic of reliable Atlanta reception.
This becomes a cost issue. Are you willing to spend a couple grand? Is it worth it to you? I'd hate for you to spend all the money for the gear and not have satisfactory reception.
This isn't meant to be a wet blanket, but in some areas, over the air reception isn't just throwing an antenna on the roof and connecting the coax. Weak and rural areas can require sizable investment in gear. In eastern Indiana you see 25', 50' and even 75' towers with antennas all over the place (and in neighborhoods!). That's what it took to receive the signals they wanted.
You are likely in that same club.
It all comes down to what is the pricetag you can live with. If going with a 50' tower and above, it gets expensive as in thousands of dollars very fast.
You can try the setup GroundUrMast has suggested, if it doesn't work out return the gear for refunds.
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