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Date: Wed, 26 Oct 2011 16:31:17 -0500
From: Larry Finger <Larry.Finger@lwfinger.net>
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To: Chiefdome <chiefdome@googlemail.com>
CC: linux-wireless@vger.kernel.org
Subject: Re: Alfa AWUS036NHR with RTL8188RU chipset
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On 10/26/2011 02:39 PM, Chiefdome wrote:
>
> Did you tested the commands you posted to me? Anyway here they do nothing. I
> cant see any changes in iwconfig nor in in iw.
>
> iw reg get
> country 00:
> (2400 - 2494 @ 40), (N/A, 33)
> (4910 - 5895 @ 40), (N/A, 33)
>
> so after my regulatory domain I should be able to change the adapter settings.

I now have tested. My device is limited to 27 dBm, thus the limit in the txpower 
command is 2700, but one can reduce the power.

finger@larrylap:~/linux-2.6> iwconfig wlan25
wlan25    IEEE 802.11bg  ESSID:"lwfdjf-n"
           Mode:Managed  Frequency:2.422 GHz  Access Point: C0:3F:0E:BE:2B:44
           Bit Rate=54 Mb/s   Tx-Power=27 dBm
           Retry  long limit:7   RTS thr:off   Fragment thr:off
           Power Management:off
           Link Quality=66/70  Signal level=-44 dBm
           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
           Tx excessive retries:93  Invalid misc:270   Missed beacon:0

finger@larrylap:~/linux-2.6> sudo iw dev wlan25 set txpower limit 2200
finger@larrylap:~/linux-2.6> iwconfig wlan25
wlan25    IEEE 802.11bg  ESSID:"lwfdjf-n"
           Mode:Managed  Frequency:2.422 GHz  Access Point: C0:3F:0E:BE:2B:44
           Bit Rate=54 Mb/s   Tx-Power=22 dBm
           Retry  long limit:7   RTS thr:off   Fragment thr:off
           Power Management:off
           Link Quality=68/70  Signal level=-42 dBm
           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
           Tx excessive retries:93  Invalid misc:270   Missed beacon:0

With your regulatory info, you should be able to get 3300, unless the rtl8192cu 
firmware has a limit to keep you from destroying the chip.

Perhaps you should ask Alfa about this issue.

Larry