On Mittwoch, 26. Oktober 2016 20:52:13 CEST johnzeng wrote:
[...]
> Thanks , and i will try to purchase suitable wifi hardware ,
> 
> Because i use raspberry [...]pi  , i have to use wifi card based usb .
> 
> whether you can advise a set of usb wifi card  based Atheros ( driver ath9k) ?

Sorry, I have zero experience with the USB hardware (ath9k_htc/carl9170). I
think Martin was using them some time ago. Or maybe someone else on the ml
has more information about them.

But these devices use a firmware running on the device. I know that there
were weird problems hunting the carl9170 hardware/firmware [1]. Th
ath9k_htc looks a little better but the TODO list for the firmware is also
quite large and there also some odd limitations mentioned on the driver
page [2].

Kind regards,
	Sven

[1] https://wireless.wiki.kernel.org/en/users/drivers/carl9170
[2] https://wireless.wiki.kernel.org/en/users/drivers/ath9k_htc