What exactly does this do? A forum search brought up nothing and Winegard's description leaves something to be desired.
Mobile Accessories - Winegard (http://www.winegard.com/mobile/other.php)
Winegard calls it a 12V battery adapter?
It has the roof antenna coming in and then out to my TV. Power looks to be switched from the Foretravel switch pictured in this post - TV Identification Help Please! (http://www.foreforums.com/index.php?topic=14658.msg86130#msg86130).
Is this some sort of amplifier? I couldn't tell a difference with power on or off on any of the pictures.