I live in a rent house, so drilling through walls/floors with conduit simply isn't an option. I don't have just a whole lot of money to throw around, so, I also couldn't afford to buy anything but materials. My labor is cheap, so, it wasn't even an option to buy one. Off to the shop!
I started with what I call "plastic wood", which I've heard called PVC board. It's not as cheap as wood, but, it also doesn't rot. I bought about 10ft of it, knowing that I could easily screw up, and need more. I ended up using less than I expected.. There is some truth to the saying of "measure twice, cut once".
I then shined up a piece of scrap aluminum, cut to the size I needed, screwed it on to the plastic wood, and drilled the appropriate sized holes for the ground, the bulkhead, and polyphaser. It was actually very simple. Time consuming, but, simple. I also added some high density foam stripping around the edges to help keep out the weather.
Here's the finished results.
A little closer
The backside a little closer
Mounted in the window
All connected up
After about 30 minutes of cleaning up the desk area by wall mounting my network gear, and voila! My very simple but effective ham shack desk.
The only thing I will need to do since these are double windows, is to find a way to mount another piece of plastic wood under the interior window. I've already cut out a slot in it filled with more high density foam weatherstripping to accommodate the cables and let me close both windows. The problem is, the interior window closes lower, and when the second piece is installed, it doesn't line up with the pass through block. Oh well, it'll give me something else to work on