The slow Internet connection goes hand in hand with the quality of the WLAN connection. Several parallel wireless networks probably have a bad infl uence on each other.(Windows XP, Vista)

               The slow Internet connection goes hand in hand with the quality of the WLAN connection. Several parallel wireless networks probably have a bad infl uence on each other.
               As far as possible, opt for an unused channel when installing a wireless network. This is however barely possible with heavy wireless traffic like in apartment complexes. In addition to the channel number, you must also take into consideration the actual signal strength of the individual channels. Moreover, it is important not only for the router but also for the WLAN client such as a Notebook to find optimum location.
               You can download the software called ‘inSSIDer’ from the site ‘metageek.net’. The tool also allows you to analyze your client’s radio environment in realtime. This is practical if you want to determine the optimum location for the different living and working areas, for instance, the living room and the terrace.

                For installation, start the MSI files and follow the setup instructions. Note that the Microsoft .NET-Framework 2.0 must be installed on the computer. After starting the program, click the ‘Start scanning’ button. The tool shortly informs you about all the existing wireless networks in a tabular form. This is followed by a graphical presentation of the signal strengths depending on the selected wireless channels. It also displays the temporary course of the individual signal strength.
                Move through the desired range keeping the inSSIDer active. You are thus ascertained that on the one hand, the signal strengths greatly depend on the position and on the other hand, the other wireless networks catch the frequency depending on the place. Normally, the strongest signal stems from its own wireless network and can also be recognized with the help of its SSID name. If you are still unsure, bring the Notebook near the WLAN router – the strongest signal is then easily recognizable if there are several wireless networks in a channel, it is recommended that you use another one.
                In the illustration, the wireless network which is marked red is currently the strongest; the signal however becomes weaker than the radio network of the same channel which is marked in green with time due to a change in the position. The configuration is not optimal at least in case of mobile use. A change to a less affected channel is recommended. If you want several wireless networks to work simultaneously, select a channel which has minimum external signal strengths. Note: If you are using one of the common FritzBox models from AVM as a router, you can immediately locate the disturbing factor along with its location directly via the user interface. For this, register yourself on ‘http://fritz.box’ on the router and click ‘WLAN | Radio channel’. Check the ‘Show disturbances’ option on the ‘WLAN environment’ diagram. In the diagram, there is a yellow bar for a recognized foreign network; your box is displayed in blue. The height of the grey bar indicates the intensity of the disturbance for the respective channel. In the upper half of the page, select a wireless channel with fewer loads.