cables on tower 150' long PoE's at bottom , tower is grounded to a 200' well cased all the way down. I have crazy Ethernet problems. 1 A.P. on the top and about 8 backhauls on it. All the Ethernet is in one bundle tie wrapped to the leg. I will have intermitted ping times and start to drop packets. (all cables terminate at cisco switch) When pings start to fall from remote location, I physically connect to the device with laptop and no problems with pings. As soon as it is attached to switch pings start suckin. I have replaced switch, exchanged cables and devices, cards etc. And still have crazy problems.(all equipment is Mikrotik). Should STP cable be grounded also? and if you ground cable to tower at one end and ground plate at bottom doesn't this induce rf through tower and ground of STP cable into switch room at base of tower? I forgot to mention there is equipment for Radio station that is live in the same building at base of tower. I know there is R.F there but, can I try and force it away from our equipment? Any suggestions would be helpful.