Hi Lastfrontier,
What a surprise to see this reply to my 4 year old post. I still have the MH and will do what I can to help. This being Fathers Day I have plans so It will mostly have to wait a day or so.
I looked at the distribution box and without removing it the only marking on it that I could see is "Winegard Entertainment Select". There are about 7 coax cables going to it and a 12v supply.
The antenna has a amplifier built into it which is powered by the distribution box. If you have the same antenna as mine, you probably need the power for the amplifier to get a signal.
I'll get back to you.
Oh yes, the box is in the right side of the cabinet over the dinette.