[57485] in North American Network Operators' Group
RE: 600VDC and 802.11?
daemon@ATHENA.MIT.EDU (James Smith)
Fri Apr 11 16:55:30 2003
Date: Fri, 11 Apr 2003 16:55:02 -0400
From: "James Smith" <jsmith@PRESIDIO.com>
To: "Jack Bates" <jbates@brightok.net>,
"Stephen Sprunk" <stephen@sprunk.org>
Cc: "North American Noise and Off-topic Gripes" <nanog@merit.edu>
Errors-To: owner-nanog-outgoing@merit.edu
That would be more of a propagation problem.=20
I'm assuming what he wants is near-field problems, like having the gear =
in the EM field of the of the wiring, and not the path between the =
antennas...
600VDC/300A? Running Frankenstiens Lab?
James H. Smith II NNCSE NNCDS
Senior Systems Engineer
First Call Response Center
The Presidio Corporation
-----Original Message-----
From: Jack Bates [mailto:jbates@brightok.net]
Sent: Friday, April 11, 2003 8:39 AM
To: Stephen Sprunk
Cc: North American Noise and Off-topic Gripes
Subject: Re: 600VDC and 802.11?
Stephen Sprunk wrote:
> Anyone know about the compatibility of high-voltage DC systems and =
802.11b?
> The gear itself will be running on 120VAC via an inverter, but =
600VDC/300A
> creates a strong EM field that messes with a lot of off-the-shelf RF =
gear
> and even some non-RF electronics.
>=20
To give you a vague idea, we had an issue with a 5 mile 802.11b run=20
early on. It turns out that the signal was crossing a power line at less =
than 5 degrees. Cutting sharply across the power line fixed our problem. =
In general, it's best to just try it and see what happens.
-Jack
