common driver pb i bet you use the native driver .......
if so :
ifconfig rausb0 up
iwpriv rausb0 forceprism 1
iwpriv rausb0 rfmontx 1
iwconfig mode monitor channel xx rate 1M
but the best thing is to upgrade driver with those cards :
http://homepages.tu-darmstadt.de/~p_...-1.1.0.tar.bz2
extract it , cd to Module dir , ifconfig rausb0 down , unplug your card, modprobe -r rt73 , make , make install , modprobe rt73


