Overhead drop wire - Distance from street lighting

Until last week, the placement of telegraph poles and lamposts was
sensible. Both at the kerb, placed regularly and alternately, so that
drop wires did not travel very close to lamposts.

Portsmouth City Council, because they can, neglected to inform me of the
plans to erect new lamp-posts which are
A) Taller, and
B) Set back from the road

I came home one night to discover one six inches from my front gate, and
right underneath my neighbours drop wire, and about 18" from mine. (I'm
not climbing the lamp-post to measure that).

Can I expect, once the newly installed lamp goes live, for my signal
rate (already suffering courtesy of the uptake of broadband lines by
everyone and his dog, with crosstalk and pair pinching being a major
problem) to suffer noticably?
Perhaps the old lamppost may be less broadband-friendly than the new
one, given it's age and the attitude towards radio emissions back in the
day?

Anyone any useful experience of similar situations to report?

At the moment, there is no power to the new post, and my BRAS is steady
at 5.5M, and has been since the BT SNAFU at Portsmouth North exchange on
October 6th (although when first activated, it was nailed to 7.15M)

Jim

Jim Howes wrote:
> Until last week, the placement of telegraph poles and lamposts was
> sensible. Both at the kerb, placed regularly and alternately, so that
> drop wires did not travel very close to lamposts.
>
> Portsmouth City Council, because they can, neglected to inform me of the
> plans to erect new lamp-posts which are
> A) Taller, and
> B) Set back from the road
>
> I came home one night to discover one six inches from my front gate, and
> right underneath my neighbours drop wire, and about 18" from mine. (I'm
> not climbing the lamp-post to measure that).
>
> Can I expect, once the newly installed lamp goes live, for my signal
> rate (already suffering courtesy of the uptake of broadband lines by
> everyone and his dog, with crosstalk and pair pinching being a major
> problem) to suffer noticably?
> Perhaps the old lamppost may be less broadband-friendly than the new

Surely the issue is what is the HF emission level of sodium lamps, and what
sort of screening effect does the metal reflector above the sodium lamp have.
I assume emissions from the power cable inside the lamp post can be ignored,
because the lamp post is metal ?


--
Mark
Please replace invalid and invalid with gmx and net to reply.

"Mark Carver" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...

> I assume emissions from the power cable inside the lamp post can be
> ignored, because the lamp post is metal ?

They make good aerials at the right frequency so you can't just ignore them.

Jim Howes wrote:
> Until last week, the placement of telegraph poles and lamposts was
> sensible. Both at the kerb, placed regularly and alternately, so
> that drop wires did not travel very close to lamposts.
>
> Portsmouth City Council, because they can, neglected to inform me
> of the plans to erect new lamp-posts which are
> A) Taller, and
> B) Set back from the road
>
> I came home one night to discover one six inches from my front
> gate, and right underneath my neighbours drop wire, and about 18"
> from mine. (I'm not climbing the lamp-post to measure that).
>
> Can I expect, once the newly installed lamp goes live, for my signal
> rate (already suffering courtesy of the uptake of broadband lines by
> everyone and his dog, with crosstalk and pair pinching being a major
> problem) to suffer noticably?
> Perhaps the old lamppost may be less broadband-friendly than the new
> one, given it's age and the attitude towards radio emissions back
> in the day?
>
> Anyone any useful experience of similar situations to report?
>
> At the moment, there is no power to the new post, and my BRAS is
> steady at 5.5M, and has been since the BT SNAFU at Portsmouth North
> exchange on October 6th (although when first activated, it was
> nailed to 7.15M)
>
> Jim

You may have a noise spike when they are turned on each day, which
shouldn't affect your BRAS but if & when it does go faulty (flickering
on & off, only parially exciting the sodium tube/bulb, etc) this
probably will affect your BRAS. It would take about 4-5 days
(official figure is 3 days) for your connection speed to come back up
after the council finally fixes the light.

Mind you if the EMEB (or equivalent do), once again, start
experimenting with broadband over the mains network all bets are
effectively called off