reply to voxframe
Re: ARGH! Ubnt radios freezing! Here in winterpeg, we've already seen -30 and i haven't had one lock up yet. That being said, I have heated cabinets. It's really really easy to keep at least the POE's and switches warm.
We have a small heater taped glued to the door side of our cabinet. Between the gear, insulation and heater, the heater turns on for about 15 minutes out of the hour in cold cold weather. A cheaper solution would be to attach a light blulb (size of your choice) to a thermostat in your box.