If you will like to try for the Chicago Tv stations , install the Winegard HD7698P antenna above the roof in such a manner that roof and house are not impeding and blocking reception in the direction of , South.
I recommend Do Not use any type or kind of signal amplifier.
Because the local Milwaukee Tv station signal strengths are Very Strong Signal Strengths.
And will most likely over load a any amplifier and cause worse reception on many channels.
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These 2 amplifiers are designed to eccept strong signals and resist overload , however that does not mean that the amplifiers will not over load because of strong signals.
If you will like to ->Test<- reception with a amplifier , then 1 at a time , try the Winegard HDP-269 preamplifier and Winegard LNA-200 'Boost' XT amplifier.
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Try reception WithOut a amplifier first.
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Digital tuners can develop - Digital Glitches - that are not cleared out with simple channel scans.
Do Double Rescan ,
http://www.wchstv.com/DoubleReScanAlert.pdf.
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The Local Milwaukee Tv stations/channels are easy to receive.
Aim a Terk HDTVi (not HDTVa) antenna at about 322 degree moagnetic compass direction.