I think that Milwaukee and Green Bay can be received with the HBU55 , with no rotator.
The Milwaukee Digital Tv stations/channels are weaker signal strength.
The Green Bay Digital Tv stations/channels are stronger signal strength.
Aim the HBU55 at about 200 degree magnetic compass direction , Milwaukee.
This will put the stronger signal strength , Green Bay Digital Tv stations/channels at a , back angle , to the HBU55.
Directional antennas receive the best at the front of the antenna and also receive at , front angles , and , back-back angles , to the the antenna.
The HBU55 aim direction can be adjusted for the best reception of Milwaukee and Green Bay Digital Tv stations/channels.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
Most Digital Tv's have a built in signal strength meter and some digital Tv's also have a signal quality meter.
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As always , trees and tree leaves do a real fine job of reducing or blocking Digital Tv reception and so do buildings and other obstructions including your own house.
It is best to install the HBU55 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 house.
Digital Tuners can develop - Digital Glitches - that are not cleared out with a simple channel scan.
Do a Double Channel Scan.
http://www.dtv.gov/rescan.html.