Posted 15 July 2005 - 05:06 PM
I do a lot of service calls for w/s issues. most of them have to do with interference and or physical placement of the router. here is an excerpt from an article i read earlier this year i saved to give to clients who went wireless , so they didn't have to pay for me to come over for trivial 5 minute issues. i hope this helps.
Check your signal
Thankfully, the client software that comes with almost all wireless network adapters can help you monitor your network's performance. With most systems, there will be a signal-strength meter in the Windows system tray (usually found in the bottom right corner of your screen).
In addition, the client software itself probably has a more in-depth system for testing signal strength. This feature is commonly called a link test function, although it may be called something else (depending on the manufacturer). Check your manual or the online help system, which usually measures:
Signal strength: Measured in decibels compared to one milliwatt (or dBm), the signal strength is sometimes referred to as signal level. The higher this number is, the better chance you have for a full-speed connection between your access point and your PC.
Noise level: Ideally, you want the noise level (also measured in dBm) to be as low as possible. Cordless phones and microwaves are common culprits for increasing the noise level.
Signal-to-noise ratio (SNR): This is the most telling of the numbers because it compares the strength of the signal with the noise that is interfering. SNR is measured in decibels (dB), and a higher number is good news.
Placing your access point
The location of your access point (AP) is key. With a little planning, you can avoid potential interference and save yourself time, money, and frustration.
Here are some pointers:
Pick a place near the center of your home.
Avoid mounting your AP on the wall. The best place is six or more inches from the wall.
Keep the AP out of the line of sight of microwaves, cordless phones, refrigerators, and other appliances that contain metal.
Your computer can cause interference, so try keeping the AP separate.
Avoid putting the AP low to the ground. Instead, keep it on a table or a shelf.
If your house is large, you may need two access points.
If your wireless network is all set up and you're experiencing interference, here are some ideas for improving the signal:
Move the access point. See the above section for pointers, and if all else fails, walk around with the AP while someone else monitors your signal strength.
Change channels. If you've got a neighbor with a wireless network, you may be operating on the same channel. You can change the channel in the software that came with your wireless access point.
Move the antenna. Not all antennas have the same range of coverage, so finding the best position is a matter of trial-and-error. Try moving yours around and changing the angle.
Change phones. If you have an 802.11b or g network, consider one of the newer 5GHz cordless phones. If you have an 802.11a, try a 2.4GHz phone. Better yet, an older 900MHz phone won't interfere with either type of network.
Check other network obstructions. Other network obstructions include ceramic tile, concrete, and even stacks of newspapers, as well as Bluetooth-enabled devices such as laptops and PDAs.