Installation Guidelines - Cisco 4G-ANTM-OM-CM Manual

Cisco Aironet 2.4 GHz 13-dBi Directional Antenna (AIR-ANT2413P2M-N)

Installation Guidelines

Because the antennas transmit and receive radio signals, they are susceptible to RF obstructions and common sources of
interference that can reduce throughput and range of the device to which they are connected. Follow these guidelines to ensure
the best possible performance:

Mount the antenna as high as possible to take advantage of its propagation characteristics.

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.

The density of the materials used in a building's construction determines the number of walls the signal must pass through
and still maintain adequate coverage. Consider the following before choosing the location in which to install your antenna:
— Paper and vinyl walls have very little affect on signal penetration.
— Solid and pre-cast concrete walls limit signal penetration to one or two walls without degrading coverage.
— Concrete and wood block walls limit signal penetration to three or four walls.
— A signal can penetrate five or six walls constructed of drywall or wood.
— A thick metal wall causes signals to reflect, causing poor penetration.

Install the antenna away from 5-GHz cordless phones. These products can cause signal interference because they operate
in the same frequency range as the device your antenna is connected to.
Site Selection
Before attempting to install your antenna, determine where you can best place the antenna for safety and performance.
Follow these steps to determine a safe distance from wires, power lines, and trees.
1. Measure the height of your antenna.
2. Add this length to the length of your tower or mast and then double this total for the minimum recommended safe distance.
CAUTION: If you are unable to maintain this safe distance, stop and get professional help.
3. Generally, the higher an antenna is above the ground, the better it performs. Good practice is to install your antenna about
5 to 10 feet (1.5 to 3 m) above the roof line and away from all power lines and obstructions. If possible, find a mounting
place directly above your wireless device so that the lead-in cable can be as short as possible.
Installing the Antenna
You can install the antenna on a pole from 1.63" to 2.3" pipe O.D. The mounting options allow the antenna to be vertically or
horizontally polarized.
Tools and Equipment Required
An installation kit is shipped with the antenna and consists of the panel antenna with adjustable mount and hardware, including:

Antenna mount bracket
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Elevation adjustable bracket
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Azimuth adjustable bracket
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