hello and thanks,
i have tried connecting the usb150 as a repeater to a router, that also runs openwrt - linksys wrt3200acm
this is from my laptop, connect to usb150 via wifi
here is my laptop connecting to the same ssid as the usb150 connects.
and this is more info about the wifi connection via the usb150 advanced interface.
also, the usb150 is connecting at 20MHz but as you can see from this, the main wifi router is using 40MHz