That would be more of a propagation problem. 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.

To give you a vague idea, we had an issue with a 5 mile 802.11b run 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