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The Chicago Tv stations are Weak signal strength and South Bend Digital Broadcast Tv Stations/Channels are Medium to Weak Signal Strength at your reception location , in the Yellow and Red reception zones.
Attics and the inside of buildings Are Not a reception friendly environment and Never Will Be a reception friendly environment.
For reception of the Weak Signal Strength Chicago or South Bend Digital Broadcast Tv Stations/Channels.
Will require a Large Tv Antenna , with the antenna inside the attic or above the roof outside of the attic.
Install a ,
http://www.antennacraft.com.
HBU44 antenna aimed at about 320 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing.html.
Use a Real and Actual magnetic compass to aim antenna , do not trust a cell phone compass.
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If reception situations happen with the HBU44 antenna in the attic that are not resolvable with antenna aim adjustments and antenna location adjustments in the attic.
Then move the HBU44 antenna to Above the Peak of the Roof in such a manner that the attic and roof and building are not , obstructing , impeding , blocking , reception in the directions of , North West , West , North , East North East.
Above the roof the HBU44 antenna is aimed the same direction for the Chicago Stations , about 320 degree magnetic compass direction.
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Here are some above the roof antenna mounts.
http://www.ronard.com/909911.html.
Use the , ronard(911) , 5 foot tripod antenna mount.
http://www.ronard.com/34424560.html.
Use the , ronard(4560) , eave antenna mount.
http://www.ronard.com/ychim.html.
Measure around the chimney and use a , ronard(2212) , ronard(2218) , ronard(2224) .
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As always tress and tree leaves plants and plant leaves have a Negative Effect on Broadcast Tv Reception and so do buildings and other obstructions in the directions of reception including your own , attic , roof , building.
Some and not al Negative Effects are.
Absorbing and Blocking Reception.
Multi-Path Reflecting Tv Signals Bouncing All Around.
The Best Practice for Reliable Reception is to install the 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 , attic , roof , building.
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The Tv's Must Channel Scan for the , ATSC-Digital Broadcast Tv Stations Channels , often named the ~ Antenna Channels ~ ATSC Channels ~ DTV Channels ~ Air 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 and channel scan for the ~ Antenna Channels ~ ATSC Channels ~ DTV Channels ~ Air Channels.