This article discusses potential sources of interference and how they affect AirPort (wireless) technology.

If an AirPort network is out of range or often interrupted, it may be due to some kind of interference.

Interference results in:

• A decrease in the range that you can communicate
• A decrease in the rate of data transfer

The farther away the interference source, the less likely it is to cause a problem. The following items can cause interference with AirPort communication:

• Microwave ovens: Placing your computer or an AirPort Base Station near a microwave oven that is in use may cause interference.
• Direct Satellite Service (DSS) RF leakage: The original coax cable that came with certain types of satellite dishes may cause interference. Obtain newer cables if you suspect RF leakage.
• Certain electrical devices such as power lines, electrical railroad tracks, and power stations.
• 2.4 Ghz phones: Cordless telephones that operate in this range may cause interference with AirPort communication when used. You should also know that there are other appliances that operate in the 2.4 Ghz range that could cause interference. If you are having problems with your phone or AirPort communication, use the AirPort Utility and change the channel frequency of your AirPort Base Station.
• Metal objects: If possible, move metal objects or change the placement of the Base Station so the path between your AirPort equipped computer and the Base Station is free from metal objects that may cause interference.

Where you are located and what materials you are surrounded by can have an impact on your AirPort performance. The table below shows common elements and their potential for interference.