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Troubleshooting 23
Check the WEP key settings to see if they match. The key is case-sensitive and the spelling on
each computer and wireless router must be exactly the same in order for the card to connect
to the router. For more information about encryption, see “Securing your Wi-Fi® Network” on
page 13.
Data transfer is sometimes slow or signal strength is poor
Wireless technology is radio-based, which means connectivity and the throughput
performance between devices decreases when the distance between devices increases.
Other factors that cause signal degradation are obstructions such as walls and metal
appliances. As a result, the typical indoor range of your wireless devices will be between 100
to 200 feet. Note also that connection speed may decrease as you move farther from the
wireless router.
In order to determine if wireless issues are related to range, we suggest temporarily moving
the computer, if possible, to 5 to 10 feet away from the wireless router. See “Placement of
your wireless networking hardware for optimal performance” on page 20.
Changing the wireless channel - Depending on local wireless traffic and interference,
switching the wireless channel of your network can improve performance and reliability. The
default channel the router is shipped with is channel 11. You may choose from several other
channels depending on your region; see your router's (or access point's) user manual for
instructions on how to choose other channels.
Limiting the wireless transmit rate - Limiting the wireless transmit rate can help
improve the maximum wireless range, and connection stability. Most wireless cards have the
ability to limit the transmission rate. To change this property, click
Start , Control Panel ,
Network Connections , then double-click your card's connection. In the Properties dialog,
select the Configure button on the General tab (Windows 98 users will have to select the
Wireless Card in the list box and then click Properties ), then choose the Advanced tab and
select the rate property. Wireless client cards are usually set to automatically adjust the
wireless transmit rate for you, but doing so can cause periodic disconnects when the wireless
signal is too weak; as a rule, slower transmission rates are more stable. Experiment with
different connection rates until you find the best one for your environment; note that all
available transmission rates should be acceptable for browsing the Internet. For more
assistance, see your wireless card's literature.
Why are there two wireless utilities in my system tray?
Which one should I use?
There are several features and advantages to using the WNU over the Windows XP Wireless
Zero Configuration utility. We offer a site survey, detailed link information, and adapter
diagnosis, to name a few.
It’s essential to know which utility is managing your adapter. We recommend using the WNU.
To use the WNU:
1 Right-click on the network status icon in the system tray and select View Available
Wireless Networks .
2 Click Advanced in the lower left corner of the Available Wireless Networks window.