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Cisco Aironet 2.4-GHz/5-GHz MIMO 4-Element Patch Antenna (AIR-ANT2566P4W-R)
78-20578-01
Installing the Antenna
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Keep the antenna away from metal obstructions such as heating and air-conditioning ducts, large
ceiling trusses, building superstructures, and major power cabling runs. If necessary, use a rigid
conduit to lower the antenna away from these obstructions.
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The density of the materials used in a building’s construction determines the number of walls the
signal can pass through and still maintain adequate signal strength. Consider the following before
choosing the location for your antenna:
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Signals penetrate paper and vinyl walls with little change to signal strength.
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Signals penetrate only one or two solid and pre-cast concrete walls without degrading signal
strength.
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Signals penetrate three or four concrete and wood block walls without degrading signal
strength.
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Signals penetrate five or six walls constructed of drywall or wood without degrading signal
strength.
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Signals will likely reflect off a thick metal wall and may not penetrate it at all.
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Signals will likely reflect off a chain link fence or wire mesh spaced between 1 and 1 1/2 in.
(2.5 and 3.8 cm). The fence acts as a harmonic reflector that blocks the signal.
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Install the antenna away from microwave ovens and 2-GHz cordless phones. These products can
cause signal interference because they operate in the same frequency range as the device to which
your antenna is connected.
Choosing a Mounting Location
The antenna should be mounted clear of any obstructions to the sides of the radiating elements.
Generally, the higher an antenna is above the floor, the better it performs. If possible, find a mounting
place directly above your wireless device to ensure the lead-in cable can be as short as possible.
Installing the Antenna
You can install the antenna on any wall. If you intend to install your antenna on another surface, you
must provide the appropriate hardware.
Note
Four mounting screws are provided to mount the antenna. To ensure a safe, reliable, and long-standing
installation, you must use all four screws to mount the antenna.
Tools and Equipment Required
A mounting installation kit is shipped with the antenna and consists of the following hardware:
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Four #8 x 1¼ screws
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Four #8 plastic anchors
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Four end caps
You may need the following tools and equipment, which are not provided.
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A Phillips screwdriver
