Introducing the first carrier class modular radio for the 900MHz unlicensed band. The XR9 utilizes an advanced noise immunity radio architecture developed by Ubiquiti RF engineers through their customer interactions and field testing over the past two years. The XR9 enables links at speeds and distances never before seen in a 900MHz radio and is designed to operate in the harshest of environmental and noise conditions where other 900MHz solutions have failed. IMPORTANT TECHNICAL NOTE: The XR9 is NOT compatible with the SR9 ubnt