[23703] in North American Network Operators' Group

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Re: Spring 1999 NOC contact drill

daemon@ATHENA.MIT.EDU (David Lesher)
Wed Apr 14 19:14:12 1999

From: David Lesher <wb8foz@nrk.com>
To: nanog@merit.edu (nanog list)
Date: Wed, 14 Apr 1999 19:11:23 -0400 (EDT)
In-Reply-To: <Pine.BSF.4.10.9904141906500.19680-100000@skipper.robotics.net> from "Nathan Stratton" at Apr 14, 99 07:08:12 pm
Reply-To: wb8foz@nrk.com
Errors-To: owner-nanog-outgoing@merit.edu


> 
> 
> 
> Sounds like there is a need for increased use of highly accurate positioning
> systems.

Tain't that easy. The SOP is to use the copper wire buried with
the [fiber, sewer, etc] and excite it with 38 Khz; then sniff for
it.

But the LF signal can and does couple to OTHER conductors in the
area, confusing everything. Often the only sure way is to hand dig
down to what you think is there.... c a r e f u l l y....



-- 
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433


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