Re: [Gumstix-users] Overo wifi txpower

[ecforu <ecf...@gm...>]

Just an FYI, i don't have all the same choices for txpower that you have,
but I have 16dBm and when I try to set it, it still comes back at 13dBm just
like yours.

I also tried setting it via the mW and my only other option which was 4 dBm
and all of them returned with iwconfig reporting 13dBm.  I was able to shut
off the tx-power and that did register.

this definitely seems like a discrepancy either in the iwconfig or the
wireless device itself.


2010/1/29 Víctor Andrés <vi...@cy...>

>
> I would like to know if it's possible change the txpower of the overo wifi.
>
> The w2cbw003 specification says that it can transmit at 15 dBm, but the
> Overo wifi is working at 13 dBm and it won't let me change it.
>
> root@overo:/# iwlist eth0 txpower
> eth0      8 available transmit-powers :
>          5 dBm         (3 mW)
>          7 dBm         (5 mW)
>          9 dBm         (7 mW)
>          11 dBm        (12 mW)
>          13 dBm        (19 mW)
>          15 dBm        (31 mW)
>          17 dBm        (50 mW)
>          19 dBm        (79 mW)
>          Current Tx-Power=13 dBm       (19 mW)
>
> root@overo:~# iwconfig eth0 txpower 15dBm
>
> root@overo:~# iwconfig
> lo        no wireless extensions.
>
> eth0      IEEE 802.11b/g  ESSID:"xxxxxxx"
>          Mode:Managed  Frequency:2.432 GHz  Access Point: 00:1B:11:18:24:2B
>          Bit Rate:48 Mb/s   Tx-Power=15 dBm
>          Retry limit:8   RTS thr=2347 B   Fragment thr=2346 B
>          Encryption key:5157-4552-5459-4153-4446-4748-31   Security
> mode:open
>          Power Management:off
>          Link Quality=81/100  Signal level=-62 dBm  Noise level=-93 dBm
>          Rx invalid nwid:0  Rx invalid crypt:11743  Rx invalid frag:0
>          Tx excessive retries:126  Invalid misc:28357   Missed beacon:0
>
>
> root@overo:~# iwconfig
> lo        no wireless extensions.
>
> eth0      IEEE 802.11b/g  ESSID:"xxxxxxxx"
>          Mode:Managed  Frequency:2.432 GHz  Access Point: 00:1B:11:18:24:2B
>          Bit Rate:54 Mb/s   Tx-Power=13 dBm
>          Retry limit:8   RTS thr=2347 B   Fragment thr=2346 B
>          Encryption key:5157-4552-5459-4153-4446-4748-31   Security
> mode:open
>          Power Management:off
>          Link Quality=76/100  Signal level=-69 dBm  Noise level=-93 dBm
>          Rx invalid nwid:0  Rx invalid crypt:12869  Rx invalid frag:0
>          Tx excessive retries:132  Invalid misc:28872   Missed beacon:0
>
>
>
>
> Has someone tested this?
>
>
> It is actually transmiting at 100 KB/seg, is it ok?
>
> Regards,
> Víctor Andrés
> --
> View this message in context:
> http://old.nabble.com/Overo-wifi-txpower-tp27369879p27369879.html
> Sent from the Gumstix mailing list archive at Nabble.com.
>
>
>
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