[ath9k-devel] Question about ath9k signal strength (AP mode)

[Lars Hardy <lars.hardy@gmail.com>]

Benoit Papillault skrev:
> Le 10/07/2010 18:12, Lars Hardy a ?crit :
>> It seems that there is a difference in signal strength between the ath9k
>> (latest openwrt-trunk with compat-wireless 08.07.2010) driver and the
>> latest dd-wrt (madwifi N?) driver.
>> The dd-wrt driver has better signal strength and performance when a STA
>> is some distance from the AP. (like 1 floor/2 rooms between)
>> I have tried with 2 different Atheros chipset in AP mode, the AR5416 and
>> AR9280. dd-wrt gives a stronger signal with both chipsets compared with
>> openwrt.
>>
>> I know the ath9k is under development, so my question is if this is
>> known by the development team and therefor will be worked on?
>>
>> Lars
>
> [ignoring other not very informative post...]
>
> Did you measure the signal strength on the STA side? What tool did you 
> use? iw / iwconfig ?
>
This was from the client side, with an AR5416 MAC/BB Rev:2 AR5133 in 
HT40 - as AP.
Tested a bit further and It seems that the signal is only weaker when 
ath9k use the 5 Ghz band. (pretty much the same as dd-wrt in 2.4 Ghz)
iw reported: Router with dd-wrt: signal: -72.00 dBm  Router with 
OpenWrt: signal: -80.00 dBm
(from this distance the STA could not connect when using OpenWrt but 
connected when dd-wrt was on the router)
STA is an AR5418 AR5133 card, using the same/latest compat-wireless as 
OpenWrt.

> Is there a way you can bisect between OpenWrt and dd-wrt? I have 
> AR5416, AR9160 and AR9280 myself, so I can test if you tell me what 
> version you used.
>
I'm sorry but I have no idea how to do that. I only used the latest 
dd-wrt binary: 
ftp://ftp.dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/06-30-10-r14684/
> Regards,
> Benoit