Technical Specifications

Antenna type	2-Element Patch Array
Operating frequency range	5150–5900 MHz
Nominal input impedance	50 Ohms
Peak gain	14 dBi1
Polarization	Linear, Dual
Elevation plane 3-dB beamwidth	30°
Azimuth plane 3-dB beamwidth	30°
Sidelobe level	< –15 dBc
Front-to-back ratio	> 25 dB
Cable length and type	30 in. (76.2 cm) outdoor rated Coax
Connector type	N Male
Length	7.8 in. (19.8 cm)
Width	7.8 in. (19.8 cm)
Height	1.2 in. (3 cm)
Weight	21.6 oz. (0.61 kg)
Operating temperature range	-40–131°F (-40–55°C)

Elevation and Azimuth Plane Patterns

System Requirements

This antenna is designed for use with Cisco Aironet access points and bridges, but can be used with any 5 GHz Cisco Aironet radio device that uses an N-male connector.

Safety Precautions

Warning: Installation of this antenna near power lines is dangerous. For your safety, follow the installation directions.

Warning: The warning means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents.

Warning: In order to comply with international radio frequency (RF) exposure limits, dish antennas should be located at a minimum of 8.7 inches (22 cm) or more from the bodies of all persons. Other antennas should be located a minimum of 7.9 inches (20 cm) or more from the bodies of all persons.

Warning: Do not work on the system or connect or disconnect cables during periods of lightning activity.

Warning: This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.

Warning: Do not locate the antenna near overhead power lines or other electric light or power circuits, or where it can come into contact with such circuits. When installing the antenna, take extreme care not to come into contact with such circuits, as they may cause serious injury or death. For proper installation and grounding of the antenna, please refer to national and local codes (e.g. U.S.:NFPA 70, National Electrical Code, Article 810, in Canada: Canadian Electrical Code, Section 54).

Each year hundreds of people are killed or injured when attempting to install an antenna. In many of these cases, the victim was aware of the danger of electrocution but did not take adequate steps to avoid the hazard.

For your safety, and to help you achieve a good installation, please read and follow these safety precautions. They may save your life!

1. If you are installing an antenna for the first time, for your own safety as well as others, seek professional assistance. Your Cisco sales representative can explain which mounting method to use for the size and type antenna you are about to install.

2. Select your installation site with safety, as well as performance in mind. Remember, electric power lines and phone lines look alike. For your safety, assume that any overhead line can kill you.

3. Call your electric power company. Tell them your plans and ask them to come look at your proposed installation. This is a small inconvenience considering your life is at stake.

4. Plan your installation carefully and completely before you begin. Successful raising of a mast or tower is largely a matter of coordination. Each person should be assigned to a specific task and should know what to do and when to do it. One person should be in charge of the operation to issue instructions and watch for signs of trouble.

5. When installing your antenna, remember:

a. Do not use a metal ladder.

b. Do not work on a wet or windy day.

c. Dress properly: wear shoes with rubber soles and heels, rubber gloves, long sleeved shirt or jacket.

6. If the assembly starts to drop, get away from it and let it fall. Remember, the antenna, mast, cable, and metal guy wires are all excellent conductors of electrical current. Even the slightest touch of any of these parts to a power line complete an electrical path through the antenna and the installer: you!

7. If any part of the antenna system should come in contact with a power line, do not touch it or try to remove it yourself. Call your local power company. They will remove it safely.

8. If an accident should occur with the power lines call for qualified emergency help immediately.

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 the building 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.

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.

Mounting on a Pole

To mount your antenna on a pole:

1. Remove antenna and mount kit from packaging.

2. Attach antenna mount bracket to the back of the antenna as shown applying a maximum nut-tightening torque of 55 in lbf (6.2 Nm).

Figure 1 Attaching Antenna Mount Bracket

 

1	Antenna mount bracket	3	1/4-in. spring lock washer
2	1/4-in. flat washer	4	1/4-in. 20 hex nut

3. Attach elevation adjustable bracket as shown and loosely secure hardware. The carriage bolt square holes must be on the inside.

Figure 2 Attaching Elevation Adjustable Bracket

 

1	Elevation adjustable bracket	4	1/4 in. spring lock washer
2	1/4 in. 20x3/4 carriage bolt	5	1/4 in. 20 hex nut
3	1/4 in. flat washer

4. Attach azimuth adjustable bracket to pipe routing band clamps as shown. Tighten the pipe clamps to a torque of 43-51 in lbf (4.9-5.8 Nm).

Figure 3 Attaching Azimuth Adjustable Bracket

 

1

Azimuth adjustable bracket

2

Pipe clamps

5. Attach antenna assembly to azimuth bracket on pipe.

Figure 4 Attaching Antenna Assembly

 

1	1/4 in. flat washer	4	Elevation adjustable bracket
2	1/4 in. spring lock washer	5	1/4 in. 20x 3/4 carriage bolt
3	1/4 in. 20 hex nut

6. Adjust the position of the antenna to the desired azimuth and elevation angles and tighten all pivot hardware (4 places) to a maximum torque of 55 in lbf (6.2 Nm). The bracket allows the antenna position to be adjustable to +/–45 degrees azimuth and +/–60 degrees elevation.

Figure 5 Adjusting Antenna Position

 

 

Note: We recommend grounding the antenna. See Grounding the Antenna.

Mounting on a Vertical Surface

The antenna can be wall mounted. Hardware is not included for wall-mount installation.

To mount your antenna on a vertical surface:

1. Remove antenna and mount kit from packaging.

2. Attach antenna mount bracket to the back of the antenna as shown in Attaching Antenna Mount Bracket, applying a maximum nut-tightening torque of 55 in lbf (6.2 Nm).

3. Attach elevation adjustable bracket (B) as shown in Attaching Elevation Adjustable Bracket and loosely secure hardware. The carriage bolt square holes must be on the inside.

4. Using the appropriate customer-supplied anchors and screws, attach the azimuth adjustable bracket to the wall as shown:

Figure 6 Wall Mounting

 

Distance Between Bracket Mounting Holes shows, in inches, the distance between the bracket mounting holes.

Figure 7 Distance Between Bracket Mounting Holes

 

5. Attach antenna assembly to azimuth bracket, as shown in Attaching Antenna Assembly.

6. Adjust the position of the antenna to the desired azimuth and elevation angles and tighten all pivot hardware (4 places) to a maximum torque of 55 in lbf (6.2 Nm). The bracket allows the antenna position to be adjustable to +/–45 degrees azimuth and +/–60 degrees elevation.

Note: We recommend grounding the antenna. See Grounding the Antenna.

Obtain Documentation and Submit a Service Request

For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What’s New in Cisco Product Documentation.

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THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.

The following information is for FCC compliance of Class B devices: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If the equipment causes interference to radio or television reception, which can be determined by turning the equipment off and on, users are encouraged to try to correct the interference by using one or more of the following measures:

■Reorient or relocate the receiving antenna.

■Increase the separation between the equipment and receiver.

■Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

■Consult the dealer or an experienced radio/TV technician for help.

Modifications to this product not authorized by Cisco could void the FCC approval and negate your authority to operate the product.

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