Change wireless chip set? [Alfa AWUS051NH]

noxcoding · 2011-07-03 04:50:28

Edit: Okay, after hours of googling I found that the rt2800usb will work for rt2770. So, now I just need to know how I can change my wireless chip set from rt2770 to rt2880.

Hello, I am an IT security student new to arch. I am currently trying to set up my Alfa AWUS051NH usb wireless adapter with my arch desktop. I have it running somewhat, but not at the speeds I would like. I purchased the product for wireless cracking as well as fast 300mbps speeds on 802.11n. I found on alfa's website that the device can either use chipsets: Ralink RT2770, or RT2750. I thought an iwconfig would tell me what chipset the device was using, but apparently not.
So I did a lsusb and got:
Bus 001 Device 002: ID 148f:2770 Ralink Technology, Corp. RT2770 Wireless Adapter
I look at an iwconfig and see it changes from bit 5-150mbps at any given time.
wlan0     IEEE 802.11abgn  ESSID:"Sentinel"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: C0:3F:0E:2C:57:4E   
          Bit Rate=54 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=70/70  Signal level=-28 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:3479  Invalid misc:8   Missed beacon:0
However it is going much slow than that. I would like to know how I can set the bit rate 300mbps. After a bit of research I tried this:
iwconfig wlan0 rate 300
&
iwconfig wlan0 rate auto
But neither have any effect. I believe the issue is that the card can use a/b/g/n standards and is not using 802.11n, which I believe is the only one that can use 300mbps. My router is broadcasting in 802.11n by the way. I don't know how to force the device to use the 802.11n.
So does any one have any ideas, and can answer some of my questions? I would very much appreciate it. If any commands are needed to be run for more information I would be glad to do so.

Last edited by noxcoding (2011-07-03 16:22:19)

noxcoding · 2011-07-03 16:22:58

edited ts, still need help though

lifeafter2am · 2011-07-03 17:20:59

Blacklist the module you don't want to load, and then load the module you do. Or, you can rmmod the module you don't want to use and modprobe the module you do.

FYI, I found that the normal kernel wireless drivers didn't play nice with packet injection on my ALFA, and I needed to install the compat-wireless drivers from the AUR.

Arch Linux

#1 2011-07-03 04:50:28

Change wireless chip set? [Alfa AWUS051NH]

#2 2011-07-03 16:22:58

Re: Change wireless chip set? [Alfa AWUS051NH]

#3 2011-07-03 17:20:59

Re: Change wireless chip set? [Alfa AWUS051NH]

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