Looks like your location is --> on the edge <--of the difference between 1 Edge path obstruction (Spook Hill Mountain Preserve) and LOS Line Of Sight excellent reception.
I suspect that location of the antenna on your property and a little higher antenna height will make the difference.
Go to the tvfool home page and click on >>Start MAPS<< , move the pointer to your house , move the pointer to different locations on your house and on your property.
Change the antenna height to higher antenna heights.
I suspect that a higher antenna height then 8 feet and better location of antenna will improve reception.
The stucko -Wire- blocks reception.
And stucko and concrete roof tile is not friendly for passing Tv reception through.
Here is the Federal Antenna Law that says Yes you can install a Broadcast Tv antenna of Any Size , Above the Roof in such a manner , so as to have Reliable Reception.
http://www.fcc.gov/mb/facts/otard.html.
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The provided 8 foot antenna height tvfool report/location shows that the signal strengths are Strong.
The reception should be Good with 1 Edge path obstruction and Excellent with LOS reception.
If there are any houses that are taller then your house in the directions of reception , the stucko Wire and concrete roof tiles of the taller house will impede reception , move the antenna to a location that the taller house is not impeding reception in the directions of reception.
For reception at your location.
A ANT751 antenna should provide Strong reception of the Digital Broadcast Tv stations/channels at your location.
A ANT751 antenna come with a J pole type antenna mount , install the on the eave of the house.
Install the ANT751 antenna above the roof in such a manner that the roof and house are not blocking reception to the , south west , west , north west , south east.
Aim the ANT751 at about 260 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
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For 1 Tv connected use No splitter. No antenna system amplifier.
For 2 Tv's connected use a simple common 2 way splitter. No antenna system amplifier.
For 3 Tv's connected use a simple common 3 way splitter. No antenna system amplifier.
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Here are some places to buy antennas and etc. .
http://www.solidsignal.com.
http://www.amazon.com.
http://www.homedepot.com.
http://www.lowes.com.
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Disconnect and Remove All satellite system passive and active componets such as and not limited to , multi-switches , multi-plexers , diplexers , splitters , amplifiers , power injectors , power supplies and etc. .
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The ANT751 Broadcast Tv antenna and other Broadcast Tv reception antennas , Can Not be connected to any type or kind of active cable service coaxes , not cable internet service , not cable tv service , not cable phone service.
If you have any type or kind of active cable service such as , cable internet service , the coaxes that are used for the active cable service/s can not be connected to the Antenna system coaxes.
The cable service/s must be on Separate coax.
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Yes the coaxes of disconnected satellite system coaxes and non active cable system coaxes and other coaxes that are on/in the house can be used for the Broadcast Tv antenna system.
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As a Test to Prove Reception.
Run a Continues length of New coax from the ANT751 antenna through a open door or window direct to 1 Tv.
No couplers , No Splitters , No grounding couplers , No nothing.
It is the ANT751 the matching transformer (balun) that connects the ANT751 to the New coax and run the new coax , direct to the 1 Tv.
The Tv Must Channel Scan for the , OTA=Over The Air , Digital Broadcast Tv stations/channels , often named the , 'Air Channels' or ' Antenna Channels' in the Tv Setup Menu because the Tv transmissions travel through the Air from the transmitting antenna to the receiving antenna.
Some Digital Tv's will Automatic channel scan for cable tv channels.
DO NOT channel scan for cable tv channels.
Go into the Tv Setup Menu and select , 'Air Channels' ~ 'Antenna Channels'.
Scan for channels.
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Digital Tv Tuners can develop - Digital Glitches - that are not cleared out with simple channel scans.
Do a Double Rescan.
http://www.fcc.gov/rescan.com.
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I think you will discover that the neighbors are Very Interested in receiving Free Broadcast Tv with a Tv antenna.
Free Broadcast Tv with a Tv antenna and Streaming internet delivered service such as NetFlix and Hulu+ is A Lot Less Money then cable tv and satellite.
And you have more choices of more and different interesting programing with Broadcast Tv and Streaming services.