Location: 35.20N 85.52 W
The screen is not metal but some sort of fabric (perhaps nylon?) and the window frame is plastic, so the only metal nearby is the mount. I used extra long nylon screws and nuts to mount the actual antenna to the lid of the box.
I took great pains to aim the antenna as perfectly as I could and then locked the wing nuts down tight. I have a completely clear view of the southern sky.
We have all seen it before...that unique combination of components that results in exceptional performance. Certainly I cannot take credit for the performance since I simply snapped the pieces together and then brainstormed a method of mounting the contraption.
I'd rather be lucky than good