Hello,
I have a wisp node in a tower used by a 10kW FM transmisor. The node is composed by a metal box, a routerboard 493 (have tried RB150&RB750) and some ubiquiti hardware (1 NS5, 2 B5, 1 R5M) and it is located about half meter away from the upper dipole of the FM radio (i´m unable to put it higher because it is already at the top). I´m having trouble with the ethernet link, it works pretty fine when the transmisor is working at 1.5kW, 100mbps/FDX, perfect, but it switches to 10mbps when the transmitor is working at 3kW and it goes down when the transmitor is running full power. Cable is shielded twisted pair with ground connections both at the top of the tower and at the bottom, i´m using shielded rj45 connectors also, and i´ve rounded the bullet5 and rocket5 with aluminium foil connected to ground, also the ethernet cable from rb493 to any other equipment in the node is about 1.2 meter long and it is inside a flexible aluminum sewer also grounded. If i don´t put anything of this, it never get link when using more that 1kW at the FM, so i think that the shielding is working but i need some more help. There are two cables from the node to the bottom of the tower, one is STP connected to an autosense switch and the other one is power cable 2.5mm section connected to a 18v 4amps power supply (in the node all the equipments are connected to this cable). Last time we added the aluminum foil to the bullet5 and rocket5, but no success. It has ethernet link for a while and after some time (maybe seconds or hours, for example link stayed up just a few seconds in a bullet5 but almost two days in the ns5) ethernet link goes down. Link does not even work at 100mbps, just forced at 10mbps.
Any ideas? is anyone using rb & ubnt hardware in a fm tower with more than 5kW?
Regards,
Marcelo