A wireless local area network (WLAN) is a computer network that transmits and receives data with radio signals instead of wires.  In short, wireless technology allows networks to go where wires cannot.

Some examples where wireless networking is an attractive option are:

1.   Where mobility is valued above everything else (speed, functionality...). Wireless networking offers obvious benefits to users of laptops who move from location to location throughout the day.

2.   When unsuitable building layouts make it difficult or impossible to build a wired network.

3.   To connect multiple buildings that cannot be connected together with traditional wiring methods

Today's wireless networks are composed of two primary components, an access point and a wireless network adapter. An access point converts the "wired" network signals to radio waves and are typically installed in ceilings or mounted high on a wall. The wireless network adapter looks and acts like a regular Ethernet card, but with an antenna protruding from it.

Each access point has a finite range within which a wireless connection can be maintained between the client computer and the access point. The actual distance varies depending upon the environment; manufacturers typically state both indoor and outdoor ranges to give a reasonable indication of reliable performance. Also, it should be noted that when operating at the limits of range, the performance may drop as the quality of connection deteriorates and the system compensates.

Typical indoor ranges are 150-300 feet, but can be shorter if the building construction interferes with radio transmissions. Longer ranges are possible, but performance will degrade with distance. Outdoor ranges are quoted up to 1000 feet, but again this depends upon the environment.

If a single area is too large to be covered by a single access point, then multiple access points or extension points can be used. When using multiple access points, each access point wireless area should overlap its neighbors.

Connecting two locations together, such as Building A & Building B (.25 miles away) requires the use of two access points setup to act as a bridge.  External antennae may be required to extend the range of each access point.

For hints on getting the most range out of your wireless network, see installation considerations below.

If you have a situation where a wireless network may benefit you, give our networking staff a call! You can dial us at 800.613.6350.

Installation Considerations

Keep in mind that the number, thickness, and location of walls, ceilings, or other objects that the wireless signals must pass through, may limit the range. Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in your home or business. The key to maximizing wireless range is to follow these basic guidelines:

1.   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 product’s range from 3-90 feet (1-30 meters). Position your devices so that the number of walls or ceilings is minimized.

2.   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! Try to make sure that devices are positioned so that the signal will travel straight through a wall or ceiling for better reception.

3.   Building Materials make a difference - 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 other materials.

4.   Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that generate RF noise.