Best performance is attained when both transmitting and receiving antenna are located at the same height and in a direct line of sight of each other. Access Points should be positioned on or close to the ceiling. Place omni-directional antennas in the center of the coverage area when possible. When ceiling mounted, try to keep antennas at least two feet from sprinkler heads, metal lighting fixtures, etc. For directional antennas, point at the direction of the coverage area.
All antenna characteristics are the same for both transmit and receive.
For outdoor mounting of antennas note that the coax RF cable should be kept as short as possible to minimize RF loss - the length of cable that comes with the antenna is optimized. Use coax cable extensions if needed, available on our accessories page - however, placing the Access Point close to the antenna and bringing the Ethernet cable to the Access Point is much preferred. Intel recommends site surveys for environments that contain unusually dense obstructions or require complex coverage areas. Should you prefer, a reseller or VAR in your area may be able to assist or perform the site survey for you.