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There are spectrum analyzers on the market that might help. A cheap way to test things out would be to install Network Stumbler on a laptop, observe the dB change when the 10 minute burst occurs, and move the laptop around to locate the offending critter. /rich On Fri, 9 Jul 2004 10:26:19 -0400, Troy Murray <[log in to unmask]> wrote: > To make the situation even stranger, I have wi-fi built-in on my new Dell > Inspiron 600m laptop (Centrino) and I use wireless at home and here on > campus, never drops. If I take my system there it exhibits the same > problem. Crazy! > > -t > > > > -----Original Message----- > From: MSU Network Administrators Group [mailto:[log in to unmask]] On > Behalf Of Troy Murray > Sent: Friday, July 09, 2004 10:18 AM > To: [log in to unmask] > Subject: Re: [MSUNAG] Laptops, Wi-Fi, Centrino, and Antennas > > I have a funny situation where my wife works. They started out in one > office building using Wi-Fi (Linksys AP and cards), but every ten minutes, > on the dot, they lose their wireless connection for about 30 seconds, then > it comes back. Both computer systems were having the trouble and I, as well > as Linksys, couldn't narrow down the situation. I checked the AP but it > wasn't rebooting every 10 minutes. For a quick fix they just ran some CAT5 > to connect everyone. > > Then they moved to a completely new building and office. They also > installed a new access point, D-Link, and had a few systems with different > wireless cards now (Intel, Broadcom, Dell). Believe it or not, the exact > same problem happens there, every ten minutes, on the dot, they lose > wireless connectivity for about 30 - 45 seconds before it comes back on. I > checked the access point and it's not rebooting or failing, very strange. > They don't run cordless phones in the office. They do have a microwave, > which we unplugged one day to see if it would correct the problem, which it > didn't. > > I would think it's something in the office, since the exact same problem > happened at both locations with different equipment. I would have a harder > time thinking that any of the other offices would have some equipment > causing this problem, since those offices aren't the same ones for the old > building they were in. > > Very strange. Any one have any ideas? > > -t > > -----Original Message----- > From: MSU Network Administrators Group [mailto:[log in to unmask]] On > Behalf Of Amy Fekete > Sent: Friday, July 09, 2004 8:29 AM > To: [log in to unmask] > Subject: Re: [MSUNAG] Laptops, Wi-Fi, Centrino, and Antennas > > What would you recommend for others with the same wi-fi problem that isn't > caused by a panasonic phone? In the evening I lose signal all the time. > > Amy > > -----Original Message----- > From: MSU Network Administrators Group [mailto:[log in to unmask]]On Behalf > Of Richard Wiggins > Sent: Thursday, July 08, 2004 11:12 AM > To: [log in to unmask] > Subject: Re: [MSUNAG] Laptops, Wi-Fi, Centrino, and Antennas > > Yes, but the ham radio operator down the street managed to intrude on our > 900 megahertz conversations constantly, which is what moved us to 2.4G for > cordless phones long before we attempted Wi-Fi. When I looked up the FCC > rules of engagement, hoping to hamstring the ham, everything I read implied > it was the phone's fault, not the ham's. > > I also read that leakage from cable modems can interfere with ham > operations, so my secret wish was that I was inflicting megahertz on him as > well. > > Anyhow, given that a laptop with built-in wireless seems to survive > Panasonic's excessively-spread spectrum -- and also 'waving the popcorn -- > life is now good. > > For us, anyhow. I wonder if that Panasonic phone knocks out the neighbor's > Wi-Fi? Ahh, life in the 21st century RF neighborhood. > > /rich > > On Thu, 8 Jul 2004 10:46:36 -0400 (EDT), Doug Nelson > <[log in to unmask]> wrote: > > This is one of the reasons I have stuck with a 900 MHz cordless phone, > > rather than a 2.4 GHz. > > > > Next stop, 802.11a? The range may be somewhat less, but you will have > > more channels and less competition, at least for a while. > > > > Doug > > > > > > Doug Nelson, Network Manager | [log in to unmask] > > Academic Computing and Network Services | Ph: (517) 353-2980 > > Michigan State University | http://www.msu.edu/~nelson/ > > > > >