Want to get some opinions on internal antenna coverage areas. Focusing on the RAP 109. This is a unit with internal antennas. Im assuming omni-directional? This unit is designed to stand vertically upward. I've seen these units placed vertidcally on desks and mounted horizantally on ceilings. Is the RAP 109 downward tilt omnidiorectional or ? Im trying to determein best placement methods for these units but not sure the coverage patterns of the antennas - anynoe know? Also, for units with downward tilt omni how do those differ from the rap 109? Vertical or horzantal positioning; what is best?