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How to reduce the signal transmission(strength) of my ad-hoc network in Windows 7?

I've created an ad-hoc network and I only wanted people near me to be connected. What I mean by near is about 8 feet(2 meters), but I tested (in open area) and people still can connect to my connection when they are about 32 feet(10 meters).

I know I can use WEP and WPA2 security to prevent unwanted users from accessing my ad-hoc network, but decreasing the power is another way to improve security.

I have gone through the settings of my wireless card adapter, but I do not know which part should I change.

Here is the screenshot of the dell wireless adapter setting:

http://www.postimg.com/image/24000/23333.jpg

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    Bro,there is something called SIGNAL STRENGTH. this affects the radius your adapter is broadcasting,100% is full coverage,reducing this % often reduces the covered field.I am not sure about the kind of adapter you're using but with the crappy router I got from streamyx,there is such an option.Try typing 192.168.1.1 into your browser,logging in and searching for a setting called signal strength or channel strength or anything that sounds similar or has a similar meaning to it.I am sure it will greatly help..

    Richard.

    Source(s): past experience working part time with Streamyx with Amirul...
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