Improve WLAN signal without additional tools on Windows

There are many commercial tools available to optimize your WLAN resp. Wi-Fi signal. If you want to achieve quick results, you need to know the signal quality in percent and the channels of neighboring routers. You can do all that for free by using a simple on-bord tool called "Netsh". Its scriptable command line-based and is used to configure networks or retrieve informations out of them. So it will work fine within a batch file.

The following command shows all wlan routers found:
netsh wlan show networks mode=Bssid

Now to optimize the position of your wireless lan device e.g. a Notebook,
all you have to do is clear the screen and loop the last command:
for /L %%a IN (%*) do (
cls
netsh wlan show networks mode=Bssid
)

You will notice that the refresh rate is too fast. It can be slowed down by using the Windows tool "timeout.exe".

New code:
@echo off
for /L %%a IN (%*) do (
cls
netsh wlan show networks mode=Bssid
timeout.exe 1
)

In order to execute the code above, save it as a text file with a cmd or bat filename extension. Alternatively you can download the batch file.

It is very important to choose a different channel than your neighbor router to prevent an overlapping of frequency. We could achieve a massive performance boost of 30% using this simple and free approach.