How do you interpret the radiation pattern of the 1000 Series Lightweight Access Point (LAP) Antennas?
A. Azimuth diagrams are usually with the device/antenna in normal operating orientation (vertical, top up, in the center of the diagram for omni; horizontal, mount at the center, forward direction towards “0” on the diagram). The A side is most likely forward and represented at the 0 mark for azimuth, and the 90 mark for elevation. The B side is represented at the 180 mark for azimuth, and 270 for elevation. The pattern does not change in free-space if the unit is inverted. But the immediate surfaces can cause reflection/absorbtion and can alter the pattern. Metallic objects near the radiators (within ~2 wavelengths or so) can also distort the pattern significantly. The Cisco Aironet Antenna Reference Guide has more information. The 1000 Series Antennas are explained in the last section of the document.
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