So - I don't think it's possible to use BiDI when using the cassettes as recommended by FS.. but I'm still trying to wrap my head around it.
They recommended this: * https://www.fs.com/products/70220.html (12fiber, MTP female on both ends, Type "A" polarity) * https://www.fs.com/products/57016.html on one end (Type A cassette) * https://www.fs.com/products/57037.html on the other end (Type AF cassette) They also said that BiDI will not work due to the polarity mis-match on TX/RX. Does this sound right? On Fri, Apr 3, 2020 at 9:20 AM Mark Radabaugh <m...@amplex.net> wrote: > In addition to Jared’s comment (don’t mix SM and MM fiber), make sure you > have the correct connectors at each end. Also make sure when ordering > BiDi optics that you pair them correctly. Tx on one end needs to match Rx > on the other. You will need two different part numbers for the SFP’s. > > Mark > > On Apr 3, 2020, at 9:11 AM, fiber...@mail.com wrote: > > I was going to write it'll work just fine, Layer 1 don't care, but you > linked to a *multimode* MTP casette. This will either fail outright or have > spectacular losses. Swap the MTP casette for a single mode one and you'll > be fine. > > Jared > > > *Sent:* Friday, April 03, 2020 > *From:* "Josh Baird" <joshba...@gmail.com> > *To:* "AnimalFarm Microwave Users Group" <af@af.afmug.com> > *Subject:* Re: [AFMUG] Fiber Up Tower > Someone who knows more about fiber, please help me out here.. > > Considering buying the 12count SM armored fiber [1] with the duplex > cassettes [2]. To maximize the usage of the 12ct, I would like to use BiDi > SFP's so that I can use a single strand of fiber per radio. If I use the > correct BiDi SFP's, will I have any issues using the duplex cassettes that > are linked here? I have always just used duplex fiber+SFPs and have no > experience with BiDi. > > [1] https://www.fs.com/products/70220.html > [2] https://www.fs.com/products/57017.html > > On Mon, Mar 30, 2020 at 11:23 PM Kurt Fankhauser <lists.wavel...@gmail.com> > wrote: > >> I have been researching this heavily over the past few days and this is >> what I am "thinking" about doing for fiber and power up tower. >> >> 1. Run a MPT/MPO fiber trunk cable up tower (12 fibers) >> https://www.fs.com/products/68017.html (indoor version but >> available immediately in USA shipping)(could use this temporarily) >> https://www.fs.com/products/70220.html (custom length rugged outdoor >> version but takes 30 days to get here from Asia) >> >> 2. Run each end of the MPT Trunk into a "MPT-12 to 6x LC Duplex Cassette" >> (tower top this will be in an enclosure) >> https://www.fs.com/products/57017.html >> >> 3. Run custom length FTTA LC connector Patch cables from the Tower Top >> enclosure to each radio SFP >> https://www.fs.com/c/ftta-patch-cables-3856 >> >> 4. For Power run individual power wires or a combination of >> multi-conductor wire "cord style." The cord below is 12 guage but has 4 >> conductors. If wired properly you could individually power 3 radios and use >> a common ground wire and still be able to power cycle the 3 radios from the >> ground. If I need 6 radios I will run a second cord. My towers are only >> 150' tall so I think 12 guage should be more than big enough for me even >> with Medusa AP's. >> >> https://www.ebay.com/itm/250-ft-12-4-SJOOW-SJO-SJ-SJ00W-Black-Rubber-Cord-Outdoor-Flexible-Wire-Cable/143388108175?hash=item216298e58f:g:KSQAAOSwA0JclR2G >> >> >> I would run the power cords and fiber trunks into a common tower top >> enclosure and wire out from there. I really like this Trunk cable idea with >> the fiber because If done right there will be absolutely no splicing of >> fiber at all. If the Trunk cable goes bad just run a new one up and plug it >> into the Cassettes and everything should keep working. You could >> standardize on a couple different lengths of the MPT fiber trunk 150' or >> 250' and just stock those and coil up excess cable outside or something. >> >> I was un-aware that Medusa AP's needed 8 gauge wire at 300' but i guess >> it could make sense. >> >> >> On Mon, Mar 30, 2020 at 9:33 PM Josh Baird <joshba...@gmail.com> wrote: >> >>> Would you happen to have a link handy for the specific OFDC that you are >>> talking about? I'm trying to spec out a similar situation right now. >>> >>> On Mon, Mar 30, 2020 at 9:28 PM Adam Moffett <dmmoff...@gmail.com> >>> wrote: >>> >>>> In the past I went with individual pre terminated cable assemblies. I >>>> went with a "core locked" fiber rather than a loose tube so there wouldn't >>>> be any icky pick oozing out. The connectors were LC duplex because the >>>> radio manufacturer's approved SFP's were LC duplex (for both Trango and >>>> Telrad). I went with individual cables because any tower climber can >>>> replace a cable, but I don't expect most tower climbers to be able to >>>> splice or terminate fiber. >>>> >>>> Today I'd strongly consider a Commscope OFDC enclosure up on the >>>> tower. I'd use a 24F and pre-splice all the connectors in the OFDC and >>>> have the tower guys hang the whole assembly. Then it would be pre >>>> terminated jumpers from the OFDC to the equipment. >>>> >>>> On 3/30/2020 5:34 PM, Matt wrote: >>>> >>>> What is everyone using for fiber up tower? What using for connectors? >>>> >>>> >>>> >>>> -- >>>> AF mailing list >>>> AF@af.afmug.com >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >>> -- >>> AF mailing list >>> AF@af.afmug.com >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- AF mailing list AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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