[chbot] Willowbank fibre network.

Tue Nov 19 03:37:18 GMT 2019

When I chatted to the enable guys they told me that little splicing/fusing
gizmo they were using cost a few thousand bucks and needed training.

I don't think fibre is exactly a hobby installation.

On Tue, Nov 19, 2019 at 4:23 PM Mark Atherton <markaren1 at xtra.co.nz> wrote:

> While I can see that fibre is probably the best engineering solution, it
> is also likely the most problematic/costly unless you can find the right
> person/source.
>
> Mind you, that wouldn't stop me from pulling over and talking to every
> Enable truck, to see if you could sweet-talk them into helping out on a
> voluntary basis.
>
> Saying that out loud, you might even approach Enable by phone and see if
> they would be willing to do the job in exchange for some good-will
> (marketing lit from Willowbank).
>
> ----
>
> As a B plan, I would run CAT6 with overall screen below the electric
> fence, and drive a metal-ground-stake at one end of the run, and ground
> the foil. At the office end, get a decent (Cisco) POE power injector,
> and at the road-end a POE powered decent switch (also Cisco) to drive
> the 77m run.
>
> So at this point, you are using high quality cable with controlled
> impedance, and controlled twist (common mode rejection ration [CMRR])
> and high quality terminations (Cisco) with decent return-loss. You only
> need to run the connection at 100MBs - the CAT6 is specified for CMRR,
> not for speed. You have a powered buffer at the far end, care of POE,
> and electrostatic shielding care of a decent foil, and ground stake.
>
> Not sure how the fibre terminal is powered at the roadside end, but I
> guess 48V is available from the Cisco.
>
> Anyway, just another viewpoint, and there is no downside to talking the
> problem through with Enable before you go any further.
>
> Just my 2c
>
> -Mark
>
>
>
>
>
>
> On 19/11/2019 2:49 PM, Daniel Powell wrote:
> > Andy, thankyou again for the offer of assistance. I'll rerun the line
> and see how much irrigation and fibre line Willilobank will need. Given a
> google earth direct run of 77m I would think that there would be no more
> than 100m would be needed.
> >
> > I must admit that my knowledge of fibre networks harks back to that of
> ancient FDDI rings and nothing more recent. Wondered what the
> recommendations were in terms of fibre routers for ethernet over fibre.
> >
> > Again thanks to the club and the members that have assisted. I know the
> group has other projects to assist Willowbank and I know that all
> assistance there is greatly appreciated.
> >
> > Regards,
> > Daniel.
> >
> > -----Original Message-----
> > From: Chchrobotics <chchrobotics-bounces at lists.ourshack.com> On Behalf
> Of ceo at andygardner.com
> > Sent: Tuesday, 19 November 2019 2:20 pm
> > To: chchrobotics at lists.ourshack.com
> > Subject: Re: [chbot] Willowbank fibre network.
> >
> >
> > Hi Daniel,
> >
> > Given the electric fence, probably best to use fibre.
> >
> > I have two solutions available:
> >
> > Single mode G657A2 drop cable - 800m roll & 120m roll.
> >
> > Single mode blowable duct cable - about 4km IIRC.
> >
> > The drop cable isn't really suited for outdoors (and the other HAS to be
> inside a duct) so probably a good idea to tee up a donation of some thin PE
> irrigation pipe from someone to pull the cable through. How long is the run
> exactly?
> >
> > I also don't have any single mode SFP's, only a bunch of multimodes.
> >
> > I'm intending to install attachments on each end of my 75mm PE water
> main coming from my 3 phase pump out in a paddock so I can blow the fibre
> through that to get the network out to the pumphouse which is right beside
> where my 1st radio shack is being built. But I won't need 4km of fibre.
> >
> > The only other use I have for it would be to install a cladestine fibre
> run along 1.2km of Orion power poles back to the local Chorus box in order
> to get off VDSL.
> >
> > Cheers,
> >
> > Andy
> >
> > On 19/11/19 1:46 pm, Daniel Powell wrote:
> >> I've recently been assisting Willowbank to form a small local LAN and
> trench in a new fibre broadband line.
> >>
> >> We've trenched into the main office and laid a section of cat 6 back to
> a portacom office from the main office. We're looking to enable network
> coverage over to the Kiwi House from either this portacom or fibre from the
> main office.
> >>
> >> To this extent the proposed copper runs above ground alongside an
> electric fence. I was thinking of running optoisolators at either end of
> copper, however a generous member of this group has offered fibre to the
> extent that would satisfy this run. I believe this to be a considerably
> better solution given the noisy environment.
> >>
> >> Willowbank have nobody to currently terminate this internal line. I
> wondered if there was someone in this group that could volunteer their
> services, or offer them for material cost to terminate a single run of
> fibre.
> >>
> >> Given their very limited current network, the run  to the kiwi house
> would enable video streaming, remote telemetry (with alerts) and data
> recovery of the incubators, kiwi weights and stop a clear majority of the
> sneekernet network that is required of the current system.
> >>
> >> Any help appreciated.
> >>
> >> Regards,
> >> Daniel.
> >>
> >>
> >
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