Makes no logical since? Maybe he's thinking emt is PVC? On Sep 8, 2016 10:18 PM, "Chadwick Wachs" <[email protected]> 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 <[email protected]> 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 <[email protected]> >> 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 >> [email protected] >> 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 > [email protected] > http://lists.wispa.org/mailman/listinfo/wireless > >
_______________________________________________ Wireless mailing list [email protected] http://lists.wispa.org/mailman/listinfo/wireless
