On 11/12/2011 10:41 PM, Hari haran wrote:
> Dear users,
>            I'm using scientific linux 6.1. Wired network is working
> fine. But I could't detect or connect any wireless networks. My wireless
> adapter is Ralink RT3090 802.11n. The wireless device is working fine
> with windows platform. Please guide me to solve this problem.
>
> with regards,
> Hariharan.
>

A colleague ran into a problem with a Ralink WNIC a while ago.  Then, 
all that was available were proprietary drivers from the vendor that 
"contaminate the kernel" (meaning not under the GPL, etc.).  Here is a URL:

http://www.ralinktech.com/en/04_support/support.php?sn=501

You may need additional assistance if you do not understand how to get a 
module loaded into the linux kernel, and certain other configuration issues.

It is possible that Ralink support is available for some linux kernels 
and/or distributions, or from some other non-vendor linux repository -- 
I do not know as I do not have to support any machines with Ralink WNIC 
components.

Yasha Karant