Netgate 200mW card and hostap for power modification

Punky punkytse at gmail.com
Tue Jan 10 22:31:21 EST 2006


Does this help?
http://wiki.voyage.hk/dokuwiki/doku.php?id=how_do_i_set_txpower_for_hostap_driver

On 1/11/06, Vikram KAUL <vkaul at research.telcordia.com> wrote:
>
> I had sent this out a few days ago. Heard nothing. Anyone has any
> pointers/help
>
> Thanks
>
> On Tue, 3 Jan 2006, Vikram KAUL wrote:
>
> vkaul>
> vkaul>I recently purchased a Netgate NL-2511CD PLUS EXT2
> vkaul>Long Range Wireless Card after reading it to have a 200 mW capability on
> vkaul>SeattleWireless.net
> vkaul>http://www.seattlewireless.net/index.cgi/HardwareComparison
> vkaul>
> vkaul>The link took me to this Prism2.5 based card
> vkaul>http://www.netgate.com/product_info.php?products_id=43
> vkaul>which does point to hostap for linux support
> vkaul>
> vkaul>Now, when I used
> vkaul>iwpriv wlan0 writemif 62 128
> vkaul>
> vkaul>to configure HFA3861_CR_MANUAL_TX_POWER register (CR31) to its highest
> vkaul>value (=128), I expected to get a confirmation of the configuration by
> vkaul>iwconfig to show 23.1 dBm (=200 mW)
> vkaul>
> vkaul>But it never goes above 100 mW (=20 dBm)
> vkaul>
> vkaul>Additionally, the received power at a 'receiver' running iwspy to the card
> vkaul>is about 25 dB weaker than a Linksys WCF12 CompactFlash using hostap and
> vkaul>same commands to control power
> vkaul>
> vkaul>Has anyone encountered these problems ?
> vkaul>
> vkaul>Additional questions:
> vkaul>--------------------
> vkaul>
> vkaul>1. Are there some studies on the correlation between CR31 (=Manual Tx
> vkaul>Power Control) and CR58 (Measured Tx Power). Under what confitions, if any
> vkaul>are they the same.
> vkaul>
> vkaul>2. Is it possible that this is a firmware issue ? Is there a way to query
> vkaul>the firmware to check the limits on power ?
> vkaul>
> vkaul>Thanks in advance
> vkaul>_______________________________________________
> vkaul>HostAP mailing list
> vkaul>HostAP at shmoo.com
> vkaul>http://lists.shmoo.com/mailman/listinfo/hostap
> vkaul>
> _______________________________________________
> HostAP mailing list
> HostAP at shmoo.com
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>


--
--
Regards,
Punky
P U N K N ! X  . c o m
Technology + Lifestyle
(http://www.punknix.com)

Voyage Linux
(http://www.voyage.hk/software/voyage.html)



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