As always , Attics Are Not a reception friendly environment and Never Will Be a reception friendly environment.
To try for reception with a antenna in the Attic , of the Locals in the Green and Yellow reception zones of the tvfool Pending Applications Included Digital radar report and channel list install a Antennas Direct Clear Stream 2 Complete VHF/UHF antenna aimed at about 260 degree magnetic compass direction.
http://www.antennasdirect.com/store/...VHF-Combo.html.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
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Try reception with No preamplifier if the house/roof has asphalt composition type singles and no metal backed insulation and no metal siding on the roof end walls.
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For 1 Tv connected use No splitter.
For 2 Tv's connected use a simple common 2 way splitter.
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WBNG-TV VHF channel 7 CBS and CW -->Will Not Be Received<-- with any type or kind of antenna Big or Small antennas in the attic , WBNG-TV 7 , Will Not Be Received in the attic , it will not happen.
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As always , trees and tree leaves do a good job of , multipath/reflecting , absorbing , blocking , Digital Broadcast Tv Reception and so do buildings and other obstructions including your own roof and house.
It is best to install the CS2 Complete antenna 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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Here are some places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.amazon.com.