good to hear you had success! i'd prefer to do fiber as well but until all vendors support it the need for using copper exists.
-sean On Tue, Sep 20, 2016 at 10:10 AM, Chadwick Wachs <c...@auwireless.net> wrote: > Wanted to circle back on this with results. Bought a 100' section of > metal lined LiquidTight at Home Depot (3/4" since I only needed 2 cables). > The 100' section was exactly the right length to get from the antennas all > the way to my cabinet in the machine room so now the cables are protected > in the cable trays down below as well. > > Used hose clamps to attach the conduit to the tower every ~6 feet. Since I > had to make 2 90 degree turns on the way down, the flexible conduit was > great. I did pull my two Ethernet wires through the conduit while it was > on the ground - figured that would be much easier - and it was. Cable is > Ubiquiti Carrier Shielded (the double shielded version). I also added the > ends with the grounding cable and grounded both the top and the bottom of > the Ethernet to a good ground. > > Been up for about two weeks now with no Ethernet issues at all. Did not > put Ferrites on these two cables like all the rest of mine have. I still > get an occasional Ethernet packet drop or error on the Ferrited cables. So > far, solid on the two cables in the LiquidTight. > > Yes, fiber is still a better long term solution but this was fairly > inexpensive and quick and is working great. Thanks for the suggestion. > > On Fri, Sep 9, 2016 at 10:51 AM, Sean Heskett <af...@zirkel.us> wrote: > >> my bad, i was answering late in the evening, i was thinking PVC when you >> said EMT. EMT will work too since it's metal but it's hard to work with on >> a tower. the 3/4" liquidtight that you linked to will fit 3 cables. we >> usually run 1 1/2" or 1 3/4" (i can't remember which at the moment) and you >> can fit 13 cables in it. we run it up to a box on the tower and then use >> 3/4" to run from the box to the individual APs or backhauls. we run the >> conduit first and then drop the ethernet cables down from the top. >> >> -sean >> >> >> On Thu, Sep 8, 2016 at 11:17 PM, Chadwick Wachs <c...@auwireless.net> >> wrote: >> >>> Interesting... Certainly easier to run. Because I have to make two 90 >>> degree turns (damn "H" shaped tower), I think I'll pull my Ethernet through >>> it on the ground and then run it up the tower with cable in it. I'm >>> guessing that cutting it and putting 90 degree elbows (with cable pull >>> windows) on it is a bad idea from an RF standpoint? >>> >>> My local HD has this in stock: >>> >>> http://www.homedepot.com/p/AFC-Cable-Systems-3-4-in-x-100-ft >>> -Liquidtight-Flexible-Steel-Conduit-6203-30-00/202262413 >>> >>> That looks what you describe. >>> >>> I have to ask - from a physics(?) standpoint, what keeps RF out of the >>> Liquidtight but not EMT? >>> >>> On Thu, Sep 8, 2016 at 10:46 PM, Sean Heskett <af...@zirkel.us> wrote: >>> >>>> If you do conduit you need to use liquidtight with the metal inside. >>>> EMT will do nothing to stop the RF from bleeding. >>>> >>>> We've done it on several towers with great success. >>>> >>>> -Sean >>>> >>>> On Thursday, September 8, 2016, Chadwick Wachs <c...@auwireless.net> >>>> wrote: >>>> >>>>> With two new FM stations moving onto the tower I am on, I need to >>>>> solve the FM noise problem once and for all. I've been using Ferrites on >>>>> each end of the Ethernet cable and its been pretty successful but I need >>>>> to >>>>> add a couple more antennas so I am considering conduit. >>>>> >>>>> This is not my area of expertise but from what I read, it sounds like >>>>> running conduit up the tower (only 75' for my antennas) is the best long >>>>> term solution? My plan was to buy some 3/4" EMT in 10' sections and clamp >>>>> it to the tower from bottom to top and run my shielded cables inside of >>>>> that. >>>>> >>>>> Is that the route to go? I am guessing I want to keep my service >>>>> loops at the top of the conduit pretty short or I negate what I just did. >>>>> I >>>>> do have longer loops at the bottom in the building so my Ethernet cables >>>>> are longer than my antenna ground wires. I'm planning on not putting >>>>> Ferrites on the cables that are in the conduit. >>>>> >>>>> Tower has 5 FM stations on it, a 900mhz paging company and two UHF DTV >>>>> stations - along with some other 5 Ghz stuff. The FM stations are "lower" >>>>> power (250 - 400 watts) but it sounds like those are the culprit for >>>>> Ethernet issues (other than AM which is no where near this tower). >>>>> >>>>> Thanks for the advice. >>>>> >>>> >>>> _______________________________________________ >>>> Wireless mailing list >>>> Wireless@wispa.org >>>> http://lists.wispa.org/mailman/listinfo/wireless >>>> >>>> >>> >>> >>> -- >>> >>> ____________________________ >>> >>> AU Wireless (Golden Wireless) >>> >>> www.AUwireless.net <http://www.auwireless.net/> >>> >>> *Facebook <https://www.facebook.com/AU-Wireless-1630781100539377/>* | >>> @auwirelessnet <https://twitter.com/AUWirelessNet> >>> >>> _______________________________________________ >>> 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 >> >> > > > -- > > ____________________________ > > AU Wireless (Golden Wireless) > > www.AUwireless.net <http://www.auwireless.net/> > > *Facebook <https://www.facebook.com/AU-Wireless-1630781100539377/>* | > @auwirelessnet <https://twitter.com/AUWirelessNet> > > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > >
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