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]<mailto:[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]<mailto:[email protected]>] On Behalf Of Eric Kuhnke Sent: Thursday, November 12, 2015 17:01 To: [email protected]<mailto:[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]<mailto:[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]<mailto:[email protected]>] On Behalf Of Josh Baird Sent: Thursday, November 12, 2015 12:19 To: [email protected]<mailto:[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]<mailto:[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?
