On 10/19/06, Eben King <eben01@verizon.net> wrote:
> On Thu, 19 Oct 2006, Paul M Foster wrote:
>
> > Eben King wrote:
> >> On Thu, 19 Oct 2006, Chuck Hast wrote:
> >>
> >>> On 10/19/06, steve szmidt <steve@szmidt.org> wrote:
> >>>>
> >>>> Plus it will not be susceptible to any interference. Now you can have as
> >>>> many connections as you want. (Once you buy the fiber optics nodes, which
> >>>> you should be able to do for a few hundred each. Then the switch to allow
> >>>> multiple connections. Plus the fiber tool which is only a few hundred. Of
> >>>> course the cable which is not too bad when you get a volume break.)
> >>>>
> >>>> But then you'll be sitting pretty! Imagine! One of the few who already
> >>>> have
> >>>> fiber to the home!
> >>
> >> [...]
> >>
> >>> I have my home on one end of my property and
> >>> my workshop/offfice/junk place on the other end with about 300 ft between
> >>> them. I have buried 1.5 inch pipe and run cat 5 through it, but of course
> >>> a lighting storm took out the hub on one end (spared the other though)
> >>
> >> Yeah, outdoor conductive LANs in Florida are contraindicated for just that
> >> reason.
> >
> > You'd think that galvanized pipe would "solve" the problem by minimizing the
> > voltage difference between the two points. Of course, if you run PVC, you'd
> > have to run a ground wire through it and ground it thoroughly at each end.
> >
> > (Yes, I know that lightning can still strike and be transmitted regardless.
> > I'm just sayin'...)
>
> Well, even if the strike-to-ground resistance through the pipe is pretty low
> (like 1 milliohm or whatever), if you pass a million amperes through it
> courtesy of Mother Nature, that's likely to do some damage. Now,
> superconducting pipe, OTOH...
>
The problem with these devices is they are tied to something that goes into
the ground, and the insulation is no competition for a ESD of that magnitude,
and the other end of that device is tied to a psu that is then connected to
mains power, which in the USA for the most part is elevated so it becomes
the other half of a big ESD capturing device....
Fibre is the best solution as far as I can see, I just have to get my 100m
of fibre run so I will have the end solution to my problem.
-- Chuck Hast -- KP4DJT -- To paraphrase my flight instructor; "the only dumb question is the one you DID NOT ask resulting in my going out and having to identify your bits and pieces in the midst of torn and twisted metal." ----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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