Get InSSIDer For Windows Free. It is the best tool for overcoming any problem which becomes the main cause of your network performance speed. Basically it works as a troubleshoot for networking related issues.
It is an essential wireless troubleshooting tool that will quickly help you get the best possible performance from your network.
Install the program on a laptop, choose your wireless adapter, and it’ll immediately detect and display your network, and any others nearby. Walk around your network area and inSSIDer will show you how your wireless strength varies in different places. Try to locate your PCs in areas with a strong signal and you’ll see faster and more reliable connections.