There is a sign hanging off of a building. The sign itself is hung at the far end of a rod. The rod is held up by both a pivot on the building's wall, and a vertical cable attached 1 m away from the building to the rod. The cable and the rod make a right angle.

Question

There is a sign hanging off of a building. The sign itself is hung at the far end of a rod. The rod is held up by both a pivot on the building's wall, and a vertical cable attached 1 m away from the building to the rod. The cable and the rod make a right angle. 
The rod has mass 30 kg, length 4 meters, the sign has mass 30 kg.

This may be confusing, so here's my feeble attempt at a picture:

img31*picoodle*com/img/img31/9/8/15/f_phypicm_bfa429c.jpg

(replace *'s with .'s)

Now, how would I find the force the pivot exerts on the rod? I know there should be no horizontal force, but I don't know how to find the vertical force.

I apologize for the repost, but I see no other way to draw attention to my unanswered question.