camper .... do you have an outdoor 120v AC outlet that is on the same electrical box as your office?
If so, this will solve your
metallic window tint/stucco problem quite nicely:
http://www.netgear.com/Products/Powe...s/WGXB102.aspx
These work very well ... I had this given to me a couple years ago, and it gave me the same 100% signal strength in my living room, as I had in my office clear across the house.