Some of the Digital Tv Stations to the South/East are very strong , so strong that an amplified antenna in any forum or type should not be used.
http://forum.tvfool.com/showthread.php?t=233 . . . Here are installers
http://www.zipinstallation.com/Antennas_s/125.html , and in the google search box , type in , structured wiring northbroom IL .