I've had UBIFI for a few months now (thanks theman!). I"m about 4 miles from the nearest tower; there are two towers that have decent links. One thing to look at is to limit the bands you use on the Mofi so it switches between those that have good levels. I'm using an external antenna fed with lmr400. Initially I tried to use a directional antenna, but couldn't get a good signal. Then I purchased a 9 dB omni antenna which worked well and is what I'm using at this time. As far as speeds go, it ranges from 2 - 47 MB, usually in the range of 10 - 30 MB. Only saw the 47MB once, though. I also kept my fixed wireless link through Rise Broadband, so I've actually got redundant links, which is nice.
Mark
You are welcome.