Bristol Bay Telephone operates a combined microwave and cellular site on top of
Big Mountain, Alaska to serve the Bristol Bay area. The site is accessible
only by helicopter for 10 months of the year, so fuel delivery can be very
costly. The site is powered by two 1.5 kW Bergey turbines on 40 ft. guyed
lattice towers, with a propane generator providing back-up. The site
experiences winds in excess of 120 mph and very heavy icing on a regular basis.