Cisco Systems OL-7426-03 quick start

When equipped with an optional factory-supplied external antenna, the 802.11a Cisco Radio supports receive and transmit diversity between the internal antennas and the external antenna. The diversity function provided by Cisco Radios can result in lower multipath fading, fewer packet retransmissions, and higher client throughput.

Figure - Cisco 1000 Series Lightweight Access Point 802.11a OMNI (Dual Internal) Azimuth Antenna Gain Pattern

Figure - Cisco 1000 Series Lightweight Access Point 802.11a OMNI (Dual Internal) Elevation Antenna Gain Pattern

5/26/05 Cisco 1000 Series Lightweight Access Point External and Internal Antennas OL-7426-03