We have a large outdoor area now covered by Ruckus T300 APs. The USB wireless adapters that we currently employ in the vehicles are not very aggressive in their changing from one access point to another. Usually they wait until the signal drops before roaming to the next AP. The current adapters do not have any settings for aggressiveness. Does anyone have any recommendations for USB wireless adapters where the aggressiveness can be changed? Having the capability to mount the antenna outside the cab of the vehicle would be a plus.