This shows the mounting of the cross boom. Note the two bolts at the top of the clamps. They are loosened with a nut driver to adjust declination. The declination handle (vertical pipe) is handy so it can be held with one hand while tightening the nuts.
Also note the polarization rotation motor and the connection point of the wood arms that turn the antennas. By moving the arms higher on the rotating arm the antennas can be made to rotate faster. The way they are set it takes about 20 seconds for 90 degrees of rotation. The power divider is mounted just below the cross boom. More on the power divider below.
This power divider is made by Chet, K3TV's company: LNA Technology. They make a line of these power dividers and high performance preamps. The divider is built like a battleship! You may think a power divider is a power divider, but with the older one, both ports at one end, I had about 20 or 30 watts reflected for 1000 out. When I installed this one the SWR is absolutely flat. Even with 1700 out and a 1kw slug I could not see any reflected power.
According to the sheet that comes with the divider: "Due to the large outer housing and inner conductor, losses are minimised. You will find that the performance of this power divider will typically exceed the performance of smaller half wave and quarter wave power dividers, both in return loss and insertion loss". Oh, it is silver plated internally and drilled for breathing so water collection should not be a problem. You can see a little rain in the photo above so maybe I'll get to test that theory, hi hi.
By the way, the antennas are not mounted at the center. I needed more ground clearance so they are mounted a couple of feet behind the balance point. To compensate for this I added a little ballast, a half brick for each antenna seemed to do the trick.