[Avila] Ubiquiti SR5 radio on GW2348-4

[Chris Lang]

Gianluca,

This would be a good question for the madwifi mailing list or it
probably has already been answered on the madwifi mailing list thus
would be a good idea to search their archives.

Also, FYI, Ubiquiti has created there own patchset that includes there
own hal against madwifi that fixes things like power setting/reporting.
Thus it may be a good idea to use that instead if you are only using
ubiquiti cards. http://www.ubnt.com/products/radiodriver.php

Thanks,

-- 
Chris Lang
Gateworks Corporation
3026 S. Higuera, San Luis Obispo, CA 93401
Ph: 805-781-2000 Fax: 805-781-2001
Email: clang at gateworks.com
Web: www.gateworks.com

On Tue, 2008-04-29 at 23:21 +0200, Gianluca Mando wrote:
> Hi all,
> 
> has anyone tested the SR5 Ubiquiti card power transmission on the
> Avila GW2348-4?
> We misured the power transmitted by this radio with the spectrum
> analyzer and we did not see the expected power.
> 
> Configuration:
> 
> - Avila GW2348-4 powered at 12Vdc or 24Vdc
> - Ubiquiti SR5 card
> - pigtail UF.L to N
> - Linux kernel 2.6.15-uc0 (Gateworks/Snapgear distribution)
> - driver madwifi-ng version 0.9.3.1
> 
> By setting a tx power of 16 dBm from the linux CLI (iwconfig athX
> txpower 16) we misured (several times and by different laboratories)
> at type N connector:
>              
>                                       14.5 dBm
> 
> instead of the expected:
> 
>         21 dBm = 16 dBm + 7 dBm (offset added by the firmware,
> according to Ubiquiti) - 2 dB (at max, for cable and connector)
> 
> Where I'm making the mistake? Is the driver version or I miss some
> other parameter?
> 
> Any help is very welcome and appreciated.
> 
> regards,
> gianluca
> 
> 
> 
> 
> 
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