Mikrotik with Kamfab case and ground the case to earth ground. RB493AH
should do.
Since most store bought routers do not have its own ground and ll of
your other ethernet related connections to the outside have
some sort of return ground IE POE with ground lug and SSbox grounded. It
would seem the thing to do is to complete the
ground for the router because if you get a power surge on the AC circuit
it will increase a large potential on the load which in turn pops
the weak ethernet ports, since those connections have a ground to go to.
On 08/19/2015 01:34 PM, Ken Hohhof wrote:
I wonder if you put something like a cheap Ethernet switch ahead of
the router, if it would just pop the one port, or the whole switch,
and whether it would propagate through the switch and still pop the
router port (I have seen that). If it just pops one port on the
switch, you can mark it bad and move to the next port.
*From:* Tyler Treat <mailto:[email protected]>
*Sent:* Wednesday, August 19, 2015 1:28 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* [AFMUG] effective grounding of ePMP on tower 250' from house
Looking for a few cost effective options/ideas here...
My parents have an EPMP link from my favorite local WISP on a 40'
Rohn25 around 250' from their house.
Shielded cat5 direct buried between the house and tower.
Have grounded 600SS at tower and at House entrance, but I don't recall
if it's bonded to electrical on the house side or not.
Operationally, it seems to work just fine, but it seems like the
ethernet port gets blown up on their router every couple months, and
it's starting to get pricey.
I'm assuming it's related to variance in ground between the house and
tower, but i'm not sure of the best way to remedy, or whether it is
appropriate/cost effective to bond the tower back to the house ground.
I thought about powering a second epmp off the other port on the other
radio and relaying back to the house, but i have reservations about
powering two radios off of one POE at that distance.
Then there's always solar+fiber i guess as a last resort, but that's a
lot of work/expense for one radio.
Anyone have some suggestions?
Thanks
Tyler
