I suggest a Winegard HD7696P antenna , and a Antennas Direct CPA-19 preamp. aimed at 129 true / 133 degree magnetic compass. Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html . I suggest replace the coax on the outside with new RG-6U / RG-6 coax and if the rest of the coax has even a hint that some it might be bad then replace all of the coax in the house. If one Tv is connected then have no splitters. Each time a split takes place the signal is reduced. That word -> patched <- is a bad word. What do you mean by that word -> patched <- ?? Also is the house a one or two story house??