Wireless card chipset to use "Wireless Advance Channels"

Is it still only possible to use a “Wireless Advance Channel” with a Astheros ar9200 series chipset card or it is now possible with the newer chipsets like the “QCA” series chipsets? Would like to use a superschannel. pls advise.

No one uses super-channels to advise on chipset needed?

You haven’t tried it yet?