My antenna is mounted at the base of the roll bar on the left side, and it points up at the same angle. The unit itself is inside of the left forward floor compartment, forward of the spar. The mounting tray is bolted to the bulkhead that runs fore and aft. The remote switch is on the instrument panel. While building my airplane I was worried about an aft CG, so chose a forward location. I?m happy with the placement of all three components and would do it again. Next winter I?m going to make a hinged floor panel so I don?t have to remove the eight screws to occasionally check it.