Date: Tue, 05 Dec 2000 23:04:28 -0700 From: Warner Losh <imp@village.org> To: Christopher Yeoh <cyeoh@linuxcare.com.au> Cc: Greg Lehey <grog@lemis.com>, Wesley Morgan <morganw@chemicals.tacorp.com>, mobile@FreeBSD.ORG Subject: Re: ray committed Message-ID: <200012060604.XAA76044@harmony.village.org> In-Reply-To: Your message of "Wed, 06 Dec 2000 16:36:12 %2B1100." <14893.53324.616401.949125@rockhopper.linuxcare.com.au> References: <14893.53324.616401.949125@rockhopper.linuxcare.com.au> <20001206152332.A21187@wantadilla.lemis.com> <Pine.BSF.4.21.0011122152410.34677-100000@volatile.chemicals.tacorp.com> <200011130313.UAA03395@harmony.village.org> <200012060509.WAA75737@harmony.village.org> <20001206154244.J20481@wantadilla.lemis.com>
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In message <14893.53324.616401.949125@rockhopper.linuxcare.com.au> Christopher Yeoh writes: : As far as range goes, for our situation the aviators worked better : than even wavelans with small antennas (yes this surprised us!). The : situation is fairly unusual though. We're on different floors and the : floor is made of reinforced concrete). Definitely no signal through : the floor (eg being directly above doesn't work). However, the way the : appartments are arranged there appears to be a path through a couple : of appartments, outside and then into his side window, that the : aviators can get a decent signal along. OK. I have two floors of my house. It is mostly wood based with the usual duct work and such. I was down stairs and the "base" was upstairs. I'd notice that sometimes things would just work, but that heavy load doesn't work too well (eg a simple FTP or scp would swamp the link). With the ZoomAir + Orinoco card (both with their default tiny anntennas) I can still get good interactive performance and 1.5mbps of ftp transfers. I see only slightly worse interactive performance during the ftp than when it isn't running. With the aviator, the ftp would just about shut down the link. Then after a while things would get worse and worse. I could then take the laptop with the aviator upstairs to 1' of the base station (which is just an intel box with an aviator card) and get 0 throughput (which sounds like a driver problem). The really strange part is that I can reboot both machines and still get horrible to zero throughput. This points to "enemy action" of some sort. I also have a wireless link with the older pre802.11 wavelan cards at 2.4GHz to a friends house. Maybe that is impacting things. It doesn't impact the 802.11b cards that I use. We've also noticed mysterious outages with the radio link for reasons that we still don't understand. We've theorized that it may be due to other users in the 2.4GHz band, which is also causing problems for the aviators. Or that could just be a red herring. I have also tried turning off the wireless link above and things didn't get better. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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