Hello we have a network bridge set up with 4 SXT 5HnD units. The 2 units that sit about 40 and 50 feet up have worked flawlessly, but the other 2 units that sit about 200 feet up keep going bad. We have gone through 4 units so far and are on our 3rd pair. They do not go bad at the same time one fails and then the next. We opened the units the first time they went bad and saw signs of moisture where the chips are soldered on to the board. Anyway we are looking at replacing these 2 units with the 5HSPN units, but we cannot find any documentation on the type or maximum length LMR cable to use. We want to put the units in a NEMA box for extra protection and would need to use a cable of about 15 feet. We are looking to use the Laird GD5W antennas. Any help would be appreciated.
Regarding the SXTs, a few of us have experienced the same issue.
See here for more info
http://forum.mikrotik.com/t/rb-sxt-losing-configuration-on-each-reboot/57786/1
The new version of the SXT has a different layout and doesn’t seem to be as susceptible to rust.