Somebody already had the experience to mount one link of 60 km of distance? I already mounted link of 5.8 GHz with 35 km using the Tsunami of the Proxim. Now necessary to mount one link of 60 km without repeter, the place is plain and has two towers of 30 meters, but it is of 33 meters the difference of altitude between the two. Which radios I must use?
I don't know of anything that can cleanly transmit so far at such a high frequency. That doesn't mean it doesn't exist, though. You'll certainly need the highest gain antennas available.