Re: [Madwifi-users] Question about txpower

[John C. <jc...@me...>]

Yang Su wrote:

> Hi,
>
> I'm playing with a wireless card with atheros 5312 chipset + madwifi 
> driver. I tried to reduce the txpower of the card by using "iwconfig ath0
> txpower xx". But it didn't really work, since the rssi value read from 
> the sniffed packets' header does not change accordingly.
>
> I'd like to ask if anyone has experience with changing the txpower of 
> the atheros cards?  Could you also point me out what kind of interface 
> has been provided by the madwifi driver to change the txpower?


It has been quite awhile since I looked at the non-madwifi driver I once 
had available to me. But basically the
current HAL does not expose TX power control, either as a 'master' 
setting, or on a per-packet basis.

Even when I had sufficient information, it was not clear how many 
drivers actually manipulated the TX
power controls...