3. It looks like the cable signal comes in from outside, goes to an amplifier box, which has two cables running out of it -- one to the basement (where I think it's plugged into a wall outlet box thing, picking up power) and the other to a massive splitter that seems to lead throughout the house. Would I be able to hook up an antenna there in the attic, attach it and the incoming cable signal to a splitter (using it as a signal merger rather than splitter), then run that to the amplifier's input? I dropped cable from TW but kept the internet about a year ago, so maybe I can help. The cable for the TV/Internet should be coming in on one line. What I did was route the TW cable straight to the outlet that servers my modem. I was fortunate enough to inherit a roof-antenna in the attic left from some previous owners, so I then routed that signal into the general splitter that serves the individual rooms. So my standard cable infrastructure is being utilized solely for the OTA signal. Since I have some older TVs, I had buy individual set-top boxes to turn the digital signal into analog. Without any intentional TV antennas set up (new house.. I looked and there's nothing in the attic that I can see) we do get 12-1, 18-1, 24-1, 58-1, and a few others. No 4-1 or 6-1 though. I'm pretty sure TW sends all the local channels through the clear QAM, which is the same pipe they're sending their internet down. (I could test this since I'm in the same boat as you, but I have a giant roof antenna logded in my attic that's working perfectly.) You just have to have a tuner that can decipher it. However, you may have to rescan from time to time to retain the signal. Being where you are you should be fine to get all the locals OTA through the smallest of antennas. The signals are coming from Lincoln Park in Milwaukee, so that's a good frame of reference if you need to point anything.