I bought one of these last week. It seems to work pretty well! The reception in the back office at DNA has always been crappy, but after running the antenna cable up to the 3rd floor, I reliably get 3+ bars instead of 1 bar or less. (There's 3 bars at the spot where the antenna is, just inside the corrugated steel roof. I really ought to punch through and put it outside, but I haven't yet.)

I wish it had more range on the other end. I wrote the manufacturer asking if it's possible to replace the base-unit antenna with a bigger one, but they haven't written back yet.