If you are using high quality, high tension strength CAT5 fiber is cheaper than a single run.
On Mon, Aug 3, 2015, 4:34 PM Justin Wilson - MTIN <[email protected]> wrote: > My thoughts on fiber and power up the tower. > > If you are doing more than 6 runs of good shielded cable over 200 feet > then fiber isn’t that much more expensive. You are going to burn through 2 > boxes of cat5/6. Thats the cost of your fiber right there. > > You get several benefits with Fiber. Eric does it a little different than > I do. With his system make sure all of your grounds are good. All of them > tied back to a single place. > > I differ in my thinking. Not saying his way is wrong, just a school of > thought. My school involves floating the ground. Fiber and DC travel up > the tower to a RB2011, which acts as a media converter. The APS and > Backhauls can be powered by whatever works for you. Dumb POEs, PacketFlux, > Tycon power, etc. This floating ground isolates the equipment from house > power. We see most of the events come from the house side and travel up the > tower on it’s way to reaching out to the sky. This is how most lightning > “strikes” happen anyway. So, we cut off the path from the house power to > the equipment with deep cycle batteries and such. > > I did a blog article about our box design. http://www.mtin.net/blog/?p=277 > > Justin > > > --- > Justin Wilson <[email protected]> > http://www.mtin.net Managed Services – xISP Solutions – Data Centers > http://www.thebrotherswisp.com Podcast about xISP topics > http://www.midwest-ix.com Peering – Transit – Internet Exchange > > On Aug 3, 2015, at 1:06 PM, David <[email protected]> wrote: > > Seems like a lot of work for a single site. > We use the hybrid cable like Lewis mentioned and we also use the hangers > but negate the extra run of > wire for power. > �I also used a CMM4 to do everything your box does. > > > On 08/03/2015 11:21 AM, Eric Rogers wrote: > > ALL of our major towers (100 people or more) and all new builds have fiber > up.� We use Outside Plant (same as we use for FTTx) up the tower, and use > 1/2� hoisting grips with 1/2� snap-in hangers.� We then use Corning > CCH-CF patch panels at the top and a rack mount at the bottom.� As for > power, we run Liquid Tight �� ARMORED conduit and use 7/8� hoist > grips and snap-in hangers.� We do run 120v to the top, and put an outlet > box at the top.� Then we down-convert to 24v with PacketFlux sync and PoE > gear.� For the 1-off like airfibers, we then just use a PoE injector at > the top. > � > BE SURE TO USE GROUND KITS ON ALL FIBER AND ELECTRICAL CONDUIT AT THE TOP > AND BOTTOM! > � > We then use a Sinewave Inverter/Charger (Xantrex Freedom SW) and BIG > telecom batteries for the UPS. > � > The only damage we have sustained was because lightning hit the > transformer directly and actually blew it up.� The power company had to > replace it totally� > � > > Eric Rogers > <Mail Attachment.png> > www.pdsconnect.me > (317) 831-3000 x200 > > � > *From:* Af [mailto:[email protected] <[email protected]>] *On > Behalf Of *Paul McCall > *Sent:* Monday, August 3, 2015 10:53 AM > *To:* [email protected] > *Subject:* [AFMUG] Fiber up the tower vs. ethernet > � > We are seeking feedback from people that are using fiber up the tower > instead of Cat5.� Interested to know what equipment (power) you are > running at the base, and what equipment (switches, routers, POE, Ethernet > protection etc.) �that you have at the top. > � > How is it working for you?� Has having everything at the top proved to > be much more stable?� It�s kinda scary to change from our current way > of doing it, but power surges are kicking are butt, clobbering radios on > the Ethernet side (mostly ePMP).� > � > Looking forward to some good feedback. > � > Thanks! > � > Paul > � > Paul McCall, Pres. > PDMNet / Florida Broadband > 658 Old Dixie Highway > Vero Beach, FL 32962 > 772-564-6800 office > 772-473-0352 cell > www.pdmnet.com > [email protected] > � > >
