Attics Are Not a reception friendly environment and Never Will Be a reception friendly environment.
Signal attenuation , electric/electronic interference , Multi-path/reflections-signals bouncing all around.
---->The stucko with stucko -->Wire<-->Will Cause Tv reception problems with a antenna in the attic.
And stucko with stucko -->Wire<-- will cause reception problems with a antenna inside the house.
Stucko -->Wire<-- is a excellent reflector , the Tv transmissions hit the stucko -->Wire<-- and bounce off.
The Tile roof Will cause Tv reception problems with a antenna in the attic.
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Here is the Federal Antenna Law that says Yes you can install a antenna Above the Roof in such a manner so as to have Reliable Tv reception with a antenna above the roof.
http://www.fcc.gov/mb/facts/otard.html.
The Federal Antenna Law over rules and makes null and void , All , Hoa's/Aho's , housing coven-nuts , dead restricted housing , city's , counties , states , and any other crazy antenna haters no matter how they dress them selfs up with rules and regulations to hide behind , so as to look other then what they are -->Nuts.
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A simple reception situation.
Install , so a ANT751 antenna is Above The Roof in such a manner that the roof and house are not blocking reception to the , north , north west , north east , south east.
Aim the ANT751 at about 0 degree magnetic compass direction.
As always , the starting antenna aim direction is the --> starting antenna aim direction.
The antenna aim can be adjusted , If required. <-- Notice the words , If required , does not say , is required.
Most Digital Tv's have a signal strength meter and some Digital Tv's also have a signal quality meter.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
The ANT751 , antenna comes with a , J type antenna mount.
Install the ANT751 antenna above vent , but Not on the Wall on the outside of the house , install the J mount so the foot of the J type mount is on the Eave of the roof above the vent at the Top of the angle of the roof.
The ANT751 antenna Must Clear The Peak of the Roof so reception is not block by any part of the roof and house in the directions of , north , north west , north east , south east.
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No antenna system amplifier is required.
For 1 Tv connected use No splitter.
For 2 Tv's connected use a simple common 2 way splitter.
For 3 Tv's connected use a simple common 3 way splitter.
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Home Depot or Lowes have the ANT751 antenna , splitters , and etc. .
Home Depot and Lowes will price match.
Copy from ,
http://www.solidsignal.com ,
http://www.amazon.com.
For the ANT751 antenna price match.
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As always , trees and tree leaves , plants and plant leaves , do a good job of , absorbing , multi-path reflecting , blocking , OTA=Over The Air , Broadcast Tv Reception and so do buildings and other obstructions including your own roof and house.
It is best to install the ANT751 at a location that has the least amount to no amount of obstructions of any type or kind in the directions of reception including your own roof and house.
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The Tv/s Must Channel Scan for the , 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'.