I am such a nerd. I am home alone and I wanted to re-aim the west-facing (I have two) antenna in the attic to pick up the PBS channel better, so I brought up the signal strength screen on the TiVo, pointed my Mac camera at it, made a FaceTime call from the Mac to my iPad (so I could see the signal meter on the TV), went up in the attic with the iPad, and aimed the antenna. I used the TiVo app on the iPad to change channels on the TiVo, so I could check the signal on all the stations. LOL.
My current KS800 settings. PM:Movie, BL:13, B:45, C:85, S:0, C:40, T:G48/R52, DCV:Off, AMP:Off, SLED:Low, FM:Auto1, BL: Auto, DC:Off, CT:Warm1, Gam:0, CS:Auto