The C5 is a good antenna for reception at your location.
Another antenna is the ANT751 antenna.
Test reception Without a antenna system amplifier First.
And can also Test reception with a Winegard , LNA-100 'Boost' antenna system amplifier.
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Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
As always , the starting antenna aim direction is the --> strating antenna aim direction.
The antenna aim direction and location can be adjusted for best reception.
Most Digital Tv' have a Signal Strength Meter and some Digital Tv's also have a Signal Quality Meter.
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