[RFI] VDSL (very-high-bit-rate digital subscriber line)

[Richard Battles]

Here in Opelika,  Alabama the city installed a city wide fiber optic
network,  the fiber comes to the home.  What is interesting about the fiber
is that the fiber is split into many pairs by optical splitting  on the
pole,  no ac or dc power is needed,  the city says that it is cheaper to
run fiber than copper to the home, and less maintenance problems.  the box
on the house is made by lucent technologies and breaks out the fiber into
copper in the house.  from the box outside,  we ran shielded cat5e to the
wireless router.  no rfi very clean.  i see no side the street boxes for
the fiber,  all home runs to the head end,  all is hanging on the poles.


richard





On Tue, Apr 22, 2014 at 3:44 AM, Dale J. <dj2001x at comcast.net> wrote:

> I believe they are on now with it, I can see their wireless network and
> it's called CenturyLink.  So far I have not seen any increase in the
> garbage level here in my shack.
>
> Thanks for the input.
>
> 73
> Dale, k9vuj
>
>
>
> On 22, Apr 2014, at 3:28, Christopher Brown <cbrown at woods.net> wrote:
>
> >
> > I am still waiting on getting the house connection refit for dual pair
> > VDSL2 but I have packed the spec-an and a few radios to work.
> >
> > From what I can tell the situation is not much different than
> > ADSL/ADSL2, there are generally alot more issues with RF getting into
> > the DSL than the other way around.
> >
> > I have found plenty of "DSL" noise sources...  Switching power supplies,
> > and digital noise from the modems themselves...conducted common mode
> > noise over cabling/etc...
> >
> > I have never seen RF interferance from the DSL signal itself unless the
> > cable pairs were so poor/impalanced/other than they were barely
> > functional for DSL (cable pairs that made a better antenna than signal
> > carrier).
> >
> > The DSL signals are comparatively and depend on the twisted pair copper
> > acting as a transmission line.  All the same stuff that would tend to
> > make them /leak/ would tend to cause terrible performance issues with
> > the service as well.
> >
> >
> > On 4/19/14, 9:35 AM, Dale J. via RFI wrote:
> >> Anybody have VDSL service to their home?  I did a quick lookup and it
> >> uses copper to the home at frequency band 25 Khz to 25 Mhz.  My next
> >> door just signed up for it.  I wonder if that will be my next
> >> challenge.
> >>
> >> Dale, k9vuj _______________________________________________ RFI
> >> mailing list RFI at contesting.com
> >> http://lists.contesting.com/mailman/listinfo/rfi
> >>
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