Re: Recieve data with Netgear WG602v2 below 80kBytes/s

	Thanks for detailing all this.  I will add that my F5D6050 appears
with vendor/product 0d5c/a002, however, on the back of the device it
has a ver. 100 sticker on.  The F5D6050 seems to have two different
products sharing the same model # :-/


You wrote:

> Dear All,
> 
> Just spent some time setting up a Belkin F5D6050 version 2 with the 
> at76c503 driver.
> 
> First thanks to all those who have put so much hard work into
> developing and maitaining this driver.
> 
> On with a bit of technical background.
> The F5D6050 I purchases has ver.1000 on the back however it
> identifies itself with the USB vendor/product 0x50d/0x50.
> 
> This is important if you have SuSE9.0.  This has a package for
> at7c503a verion 0.10. You need to download 0.11 to cope with this
> device.
> 
> Ok back to the problem.
> Once everying was working on the linux end I found the recieve data
> rate was very poor. The problem occurs when connecting to my Netgear
> WG602v2 access point. Since I only have this one AP I'm not sure
> which side was responsible for the bad performace. The latest
> firmware upgrade "wg602v2_3_1rc5.img" makes no difference however.
> 
> 
> After much work trying to get the Windows drivers sorted out I was
> able to reproduce this behaviour in Windows.
> 
> Under windows I could repoduce the problem with the Belkin v2.15
> driver as shipped on the CD-rom
> Downgrading to the v2.14 driver fixes the problem!!
> I assume the issue is with the latest firmware. The working old
> firmware is version 0.100.5.78
> 
> With this knowledge I was able to try out all the options in the
> linux v0.11 driver. I was lucky and found that the compatiblity
> problem is with the long/short preambles.
> 
> For Linux the workaround is to set
> EITHER in "modules.conf"
> 	options at76c503 preamble_type=1
> 
> OR on with the command
> 	iwpriv wlan0 short_preamble 1
> 
> I hope this information is understandable and of some use!
> 
> Michael
> 
> ___________________________________
> Michael Stevens Systems Engineering
> Lilienweg 13a
> 34128 Kassel, Germany
> 
> Phone/Fax: +49 561 5218038