Here goes...
We have a new 118' Super Titan Max tower that has been grounded
per manufacturers recommendations. Each leg is physically bonded (not
exothermically) to a 10' ground rod, all ground rods are then connected
to each other in a ring. The equipment cabinet is bonded to an 8'
ground rod and tied into the meter base grounding as well. The two
ground rings are then bonded to each other in 2 separate places.
With that said our issue has not been with the grounding, but with
the dissipation of static at the height of the antennas. We currently
have had the worst problems with the 3 Cyclone 2.4 antennas which are
currently located on masts at the top of the tower. We have also had
issues with a couple of the 5.7 Cyclones located below the top of the
tower, but not as frequently. The center-line of the 2.4 APs is 120'
AGL, the height of the tower is 118' AGL. We currently have WB-GigE-APC
surge arrestors located in the cabinet which is located 10 ft from the
base of the tower.
After doing some research through various Cambium manuals and the
Motorola R56 manual, I have some idea what our issue is, but would like
to bounce those ideas off the community. My thought is that we
neglected to put surge arrestors at 50' to 75' intervals (as recommended
by the Motorola R56 manual) and 1 at the top for use in thunderstorm
areas. Also we may need to lower the APs to a minimum of 2ft below the
top of the tower (per the Cambium manuals for various antenna types).
Any suggestions or comments would be appreciated. What have you
done to mitigate this problem? Etc...
Thanks,
-Ed
--
Edward Brooks
/Outside Plant Manager
The Montana Internet Corporation/
406-443-3347 X506
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
