Do it ourselves. Occasionally use a low voltage contractor to install a roof box on building rooftop sites.
You don't need a fancy/expensive fusion splicer to do splices suitable for a tower or rooftop build. We're talking about 1310nm optics that are nominally rated at 10km reach on normal G.652.D type singlemode. You can get a pretty decent Chinese fusion splicer for $2500 new. I also have an older Siecor unit I picked up from an eBay vendor for $500. It works fine as well. On long distance fiber stuff you absolutely want the lowest loss splices possible, but with runs of <1km it doesn't really matter if a few terminating splices at each end are 0.02db or 0.035db. On Thu, Nov 19, 2015 at 3:57 PM, Scott Vander Dussen <[email protected]> wrote: > Eric- > > Thanks for the advice, tips, and links, that helps a lot. Do you > terminate the trunk cables yourself or purchase preterminated? > > > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Eric Kuhnke > *Sent:* Thursday, November 19, 2015 13:29 > *To:* [email protected] > *Subject:* Re: [AFMUG] Fiber up a tower > > > > In a tower top junction box it is a lot easier to deal with duplex SC > because they're larger and more physically robust. LC is necessary at a > typical radio because most things are SFP these days. > > Inside your weatherproof box at the top you might have a single Corning > CCH cassette stuck down to the backboard, and one of these for 12 fibers: > > http://ecx.images-amazon.com/images/I/41Yu2cJ9AYL.jpg > > Looks like this, the black box on the right holds a single corning CCH > panel and has enough room to hold 12 splice sleeves and coiled loose fiber: > > > http://www.discount-low-voltage.com/core/media/media.nl/id.1733/c.1259044/.f?h=8381e920790d635a2ab4 > > That's good for either six or twelve radios, depending on if you use > regular 1310nm SFPs ($18-30/ea) or BiDi 1310/1490 single strand SFPs (about > $25-35 each). > > > > In a typical setup I have worked with you have the SC end of the jumper > cable in the top box, and then 3/4" or 1" non metallic liquidtight from the > top box to the radio heads themselves. It's impossible to push SC > connectorized semi-armored duplex cables through 3/4" or 1" liquidtight, in > parallel with 18AWG or 16AWG copper for power. You want LC at the radio > head anyways. So you buy SC to LC cables, push or pull the LC end through > the liquidtight. > > These cables: > http://www.ecablemart.com/armored_patch_cord/listing/?zenid=smn271c3qud1ov4v22argml2d6 > > > > > > On Thu, Nov 19, 2015 at 11:56 AM, Scott Vander Dussen <[email protected]> > wrote: > > Why use SC connectors for the trunk line and only LC on the jumpers? Why > not just LC everywhere? > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Eric Kuhnke > *Sent:* Thursday, November 12, 2015 17:01 > *To:* [email protected] > *Subject:* Re: [AFMUG] Fiber up a tower > > > > Do SC/UPC duplex bulkhead connectors in your tower top box, for example if > running 24 strands up a tower. Use SC to LC jumper cables in liquid tight > conduit. LC for the radio end of course. > > One corning CCH panel is good for twelve strands of SC connectors. There > are tiny enclosures for the cch intended for wall mount. They mount on > nema4x enclosure aluminium back plates just fine. > > On Nov 12, 2015 12:56 PM, "Scott Vander Dussen" <[email protected]> > wrote: > > Thanks for the feedback, few more noob questions- > > > > LC connectors are the best choice for use with SFP modules? > > 50/125um for better distance with 850nm lasers? > > Loose tube flooded and armored is best choice for tower riser without > conduit? > > > > TIA, > > Scott > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Josh Baird > *Sent:* Thursday, November 12, 2015 12:19 > *To:* [email protected] > *Subject:* Re: [AFMUG] Fiber up a tower > > > > We are ordering pre-terminated armored CommScope fiber from Best-Tronics > and running it from a router at the base of the tower to a switch at the > top. I would suggest giving BT a call. > > > > Josh > > > > On Thu, Nov 12, 2015 at 2:13 PM, Scott Vander Dussen <[email protected]> > wrote: > > Wanting to upgrade several towers with fiber up to the backhauls, any > recommendations for specific product or procedures to do the job right the > first time? > > > > >
