good to hear you getting all the channels
The signals might be reflecting off objects to your antenna. As long as you get the signals :D If your interested in a particular station I recommend building a Yagi antenna which is good for a specific channel. Martin E. Meserve - K7MEM - VHF/UHF...
I like your post
I live in apartment as well. Same issues you mentioned about mounting the antenna. Then I read some more about how the walls and roof are preventing signal from reaching antenna. Then I got a longer coax cable rg6 type and moved around the room to find better spot. When I...