Warning: Installation of this antenna near power lines is dangerous. For your safety, follow the installation directions.
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. Each person involved in an installation 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, follow these guidelines:   

     a. Do not use a metal ladder.   

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

     c. Do dress properly—wear shoes with rubber soles and heels, rubber gloves, and a long-sleeved shirt or jacket. 

6. If the assembly starts to drop, move away from it and let it fall. Because 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 completes an electrical path through the antenna and the installer. 

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 to have it removed safely. 

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

Antennas transmit and receive radio signals which 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:
·Install the antenna vertically and mount it with the cables pointing towards the ground. 

·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 can pass through and still maintain adequate signal strength.   Consider the following before choosing the location for your antenna:     

– Signals penetrate paper and vinyl walls with little change to signal strength.     

– Signals penetrate only one or two solid and pre-cast concrete walls without degrading signal strength.     

– Signals penetrate three or four concrete and wood block walls without degrading signal strength.     

– Signals penetrate five or six walls constructed of drywall or wood without degrading signal strength.     

– Signals will likely reflect off a thick metal wall and may not penetrate it at all.     

– 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. ·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.