User's Manual

LinkTek WL11N Wireless Broadband Router User Guide
7
Installation Considerations for Wireless LAN
Many physical environmental factors can impact wireless networks. Radio waves are used to
carry the encoded data between devices. These radio transmissions can become degraded due
to signal attenuation, multi-path distortion and interference or noise. Attenuation simply means
that the strength of the signal weakens with the distance it travels, even if the transmission path
is unobstructed. Multi-path distortion occurs when radio signals bounce off objects like walls,
ceilings, metal appliances, etc. This may cause a signal to be duplicated, with each separate yet
identical signal arriving at a receiver at different times. Interference and noise from electrical
devices such as microwave ovens, fluorescent lights, automobile engines and other radio
emitting devices can cause signal degradation. With all of this in mind, choose a location for all
access points on the wireless LAN.
Wireless networking lets you access your network from nearly anywhere you want. However, the
number of walls, ceilings, or other objects that the wireless signals must pass through can limit
signal range. Typical ranges vary depending on the types of materials and background RF noise
in your home or business. To maximize range and signal strength, use these basic guidelines:
x
Keep the number of walls and ceilings between the access point and other network
devices to a minimum - each wall or ceiling can reduce your wireless device’s range from
3-90 feet (1-30 meters.) Position wireless devices so that the number of walls or ceilings
is minimized.
x
Be aware of the direct line between network devices. A wall that is 1.5 feet thick (.5
meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree
angle it looks over 42 feet (14 meters) thick! Position devices so that the signal will travel
straight through a wall or ceiling (instead of at an angle) for better reception.
x Materials can impede the wireless signal - a solid metal door or aluminum studs may
have a negative effect on range. Try to position wireless devices and computers with
wireless adapters so that the signal passes through drywall or open doorways and not
dense, especially metallic, materials. Also, note that metal filing cabinets and appliances
can reflect radio signals. When these metal objects are moved around, your wireless
network may be affected.
x
Keep your access point away (at least 3-6 feet or 1-2 meters) from electrical devices or
appliances that generate extreme RF noise such as microwave ovens, CRT monitors,
motors, etc.