Items that can cause interference with airport – Apple AirPort Express v4.2 User Manual
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Tips and Troubleshooting
 Avoid placing your AirPort Express in areas surrounded by metal surfaces on
three or more sides.
 If you place your AirPort Express in an entertainment center with your stereo
equipment, avoid completely surrounding AirPort Express with audio, video, or
power cables. Place your AirPort Express so the cables are to one side. Maintain as
much space as possible between AirPort Express and the cables.
 If you place your AirPort Express behind your stereo equipment, place it on one side
or the other. Avoid centering it behind your stereo.
 Try to place your AirPort Express at least 25 feet from a microwave oven and a 2.4
GHz cordless phone, or other sources of interference.
Items That Can Cause Interference With AirPort
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
 Direct Satellite Service (DSS) radio frequency leakage
 The original coaxial cable that came with certain types of satellite dishes. Contact
the device manufacturer and obtain newer cables.
 Certain electrical devices such as power lines, electrical railroad tracks, and power
stations
 Cordless telephones that operate in the 2.4 gigahertz (GHz) range. If you have
problems with your phone or AirPort communication, change the channel your base
station or AirPort Express uses, or change the channel your phone uses.
 Adjacent base stations using nearby channels. For example, if base station A is set to
channel 1, base station B should be set to channel 4 or higher.