+1 on ferrits.
On Feb 28, 2012, at 22:23, Joe Fiero <joe1...@optonline.net> wrote: > Tim, > > I have had 100% success by using a good quality shielded cable and following > a strict bonding regiment. Bonding the antenna, radio, mast and cable to > the tower at the top is imperative, as is the same process at the bottom. > It's also important that the tower be bonded and that the bond is common > with that in the equipment room. Make sure the inside end of the cable is > bonded as well. In other words, there should be no difference in potential > between the ground in the equipment room, the tower or your equipment on the > tower. You must carry that bonding through to the rack and equipment you > place in the room as well. Also, be sure to use grounded cable on jumpers. > And the real trick is putting ferrite beads on both ends of the POE cable. > > I had a site exhibiting between 50 and 70 percent packet loss between the > topside radio and the router in the room when initially installed. The > installer never noticed there were two FM stations on the tower ( 55Kw and > 30Kw ). We even swapped radio equipment twice because he insisted there > were no transmitters in close proximity. Once we "discovered" the FM > stations he did as I described above and we went immediately to 0% packet > loss from the router. > > Joe > > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Tim Warnock > Sent: Tuesday, February 28, 2012 9:15 PM > To: 'WISPA General List' > Subject: [WISPA] ethernet and towers with FM transmitters > > Hi All, > > I have a question as to how other operators are handling POE radio links and > high power FM transmitters. > > We often see things like a radio will run errors or drop to 10mbps instead > of 100mbps until we find a good position on the tower that its happy with. > Once its happy we never have an issue again. > > We've tried earthing, not earthing, STP, UTP. Nothing seems to definitively > solve the issue. > > Does anyone have any advice they'd like to share? It would be muchly > appreciated. > > Thanks > Tim > > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
