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Cisco Aironet Series 2700/3700 Access Points Deployment Guide
Cisco Aironet Series 3700 Access Point
Figure 53 In Areas where High Amounts of Metal are Present, a Site Survey is Required
When using 802.11n rates in areas with high metal, such as distribution areas or airport hangars
sometimes, lower gain antennas (on the ceiling) can perform better because they tend to radiate the
signal in all directions increasing the chance that multi-path will enhance the signal. Of course, if you
have a clear shot, a patch antenna at the end of an aisle at roughly the same height or just above the
(WLAN client) is preferred.
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