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JeremyNzl

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#251005 4-Jun-2019 17:35
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Hi guys, 

 

 

 

Need to mount an end of a ptp bridge 300m away from a fixed solar repeater tower, aerial only needs 7w 24v, 

 

To achieve los to a commercial tower.

 

 

 

instead of mucking around with poe extenders, I was thinking of doing the 300m in fiber if I can keep the cost down. 

 

 

 

I have a netonix switch with 2 spare sfp ports and was thinking  ubnt fiber poe unit at the other end with a small panel and battery

 

https://www.ui.com/accessories/fiber-poe-accessory/ 

 

 

 

who would sell an outdoor fiber cable pre terminated for a reasonable price. under 1K, (am I dreaming)

 

 

 

Thoughts  

 

Jeremy


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billgates
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  #2251369 4-Jun-2019 17:43
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try fs.com 

 

single mode should so the job.





Do whatever you want to do man.

  

cyril7
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  #2251374 4-Jun-2019 17:57
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Yep can vouch for fs.com used them before, the shipping can be a catch, I recommend that you go 4 core not 2 as you might want spares in future.

 

https://www.fs.com/au/products/29606.html

 

Cyril


 
 
 
 


JeremyNzl

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  #2251433 4-Jun-2019 18:48
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Thank you both for your advise, 850nzd for Military grade 300m 

 

 

 

Tactical ends are even an option 💪

 

 

 

How picky are sfp modules , any pitfalls to look out for 


cyril7
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  #2251436 4-Jun-2019 19:00
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What switches are the sfp's to go into, as for tactical connectors,........ Dont

Cyril

JeremyNzl

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  #2251438 4-Jun-2019 19:08
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Netonix wisp switch ws-8-150-dc 

 

ap end will be either above linked ubiquity fiber Poe converter,  or a mikrotik 

 

 

 

Tactical connectors look like trouble

 

Can you offer advice on connectors, there are so many types 


chevrolux
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  #2251439 4-Jun-2019 19:13
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If you are plugging directly in to the switches with this cable, you will want LC connectors.

 

Go with multimode fibre for cheaper optics too. Ubiquiti aren't too picky on SFP's, no idea on netonix.


billgates
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  #2251477 4-Jun-2019 19:36
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300m on multimode fibre might be a push. Single mode fibre will deliver best results and cheaper too.




Do whatever you want to do man.

  

 
 
 
 


JeremyNzl

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  #2251485 4-Jun-2019 19:44
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Yup just priced the multi, 1/3rd dearer, 

 

Does single mode use 2 fibers ie need a lc dupex connector, or is it 1 fiber and simplex

 

and are sfp modules that list 3kms suitable for up to 3kms, 

 

 

 

I will confirm above with the hardware retailer, before ordering the cable


sparkz25
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  #2251502 4-Jun-2019 19:47
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Wouldnt it be easier and cheaper to just use another wireless link?


JeremyNzl

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  #2251517 4-Jun-2019 20:17
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yes, but pushing over 200mb at peaks, clear spektrum all starts to work against me, 

 

 

 

Iam rural and will never be able to get fiber, A local wisp will get me onto a first hop tower, 

 

With this link 50/140 will be for me and wisp will be able to access my neighbors, 

 

 

 

my other option was to fell 12+ 10-15m pines on council land at an airport. for a tunnel through trees which may have still had fresnal issues.

 

Iam trying to problem solve to keep deployment costs down and its fun

 

 

 

 


cyril7
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  #2251526 4-Jun-2019 20:29
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Have you considered 60ad, a link will cost around $500 and the dish format will run out to 1.5km and do Gig

https://www.gowifi.co.nz/backhaulptp/rblhgg-60adkitr2.html


Cyril

Edit, just read trees maybe an issue

sparkz25
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  #2251529 4-Jun-2019 20:37
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air fiber? lol or a rocket 5 prisim ac?

 

 

 

Can you go around the trees with the links?

 

 

 

I know what you are trying to achieve as I'm currently in the process of setting up a solar site for a friend and supplying him with a fiber.

 

We have found that there is no direct line of sight to his place but we have gained permission to use a neighboring farms hill as it is one of the tallest hills in the area on the conditions we share the connection with him.

 

 


chevrolux
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  #2251539 4-Jun-2019 20:59
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billgates: 300m on multimode fibre might be a push. Single mode fibre will deliver best results and cheaper too.

 

Multimode fibre will have zero issues going 300m. It's exactly what it was designed for. Short haul, campus connectivity.

 

Single mode will give no benefit in this solution. At all.


LennonNZ
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  #2251541 4-Jun-2019 21:00
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Go for Single Mode Fibre with LC-UPC (LC) on them (not LC-APC)

 

SFP's can use 2 Fibres (1310 send/recieve) or 1 Fibre each or a different colour send/recieve at either end (1310/1490) or (1310/1550) for example.

 

It makes no difference but these days a lot of people use the single fibre connections as Carriers usually charge per fibre so 2 fibres is double the cost. For what you are doing get what you can afford.

 

Also depending on the SFP's you might need attentuators but if I can find SFP's which can recieve near the same as they send out normally they are not needed but I've had SFP's which get upset with too much light on short distances but all decent SPF's with DOM (so you can read specs/light etc) will tell you if they are getting too much light to work properly.

 

 

 

 

 

 

 

 

 

 


chevrolux
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  #2251542 4-Jun-2019 21:05
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Yup just priced the multi, 1/3rd dearer, 

 

Does single mode use 2 fibers ie need a lc dupex connector, or is it 1 fiber and simplex

 

 

That's super interesting that multimode is dearer! Got a link to what you priced? It's certainly not the case when buying drums of the stuff, and I've bought a fair few km's of it over the years!!

 

The fibre type doesn't necessarily determine whether its duplex/simplex, that's up to the optics. But I think I am safe in saying you will have a much easier finding duplex SFP's, rather than simplex. You generally see simplex fibre in carrier networks - like how Chorus deliver p2p fibre to businesses, or with GPON networks.

 

So yes, go LC duplex fibre.


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