Cisco Aironet 1850 Series Deployment Manual page 31

Assuming that the antenna is mounted on a wall, the Azimuth (in Red) is the signal going forward from the antenna. The elevation,
in Blue, is the "up/down" pattern.
Figure 25: Specifications for the AIR-ANT2524V4C-R Dual-Band Omni Antenna
Figure 26: Radiation Pattern for the AIR-ANT2524V4C-R Dual-Band Omni Antenna
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