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I use an atheros card that requires ath9k driver. Are there any tools that can be used to increase the signal power of the wi-fi card?

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2 Answers

If your issue is getting signal in your home or business only, perhaps you want to consider dealing with the other side of the equation (the AP or router). I have replaced the standard rubber duck antennas on my AP with higher gain equivalent... also, if you can often add on an external antenna to your computer side wifi device.

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I use my laptop itself as an AP. Here is how I set it up: askubuntu.com/questions/21679/… –  nixnotwin Jan 22 '11 at 17:16
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up vote 4 down vote accepted

Found the commands in the iwconfig man pages:

sudo iwconfig wlan0 txpower 15

or

sudo iwconfig wlan0 txpower 30mW
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