Date: Tue, 04 Mar 2008 22:45:48 +0100 From: Erik Norgaard <norgaard@locolomo.org> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: OT: Avoiding wireless interference / ifconfig's S:N output Message-ID: <47CDC30C.3080106@locolomo.org>
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Hi: I'm not a radio engineer so I'm asking here: My network neighbourhood is getting crowded: SSID BSSID CHAN RATE S:N INT CAPS javinat 00:30:65:1f:96:34 1 11M -90:-95 100 EP WLAN_F9 00:02:cf:74:9c:20 1 54M -86:-95 100 EPS Livebox-E018 00:1e:4c:56:ae:c9 1 54M -94:-95 100 EP WPA MYNET 00:14:7c:41:fd:b6 6 54M -63:-94 100 ES Jazztel Wir... 00:c0:a8:b4:9e:6a 11 54M -87:-95 100 EP Lynch 00:18:84:80:70:3e 7 54M -94:-95 100 EPS WPA RSN WME ATH WLAN_03 00:16:38:ea:52:e9 3 54M -92:-94 100 EP WLAN_D3 00:1a:2b:6b:cc:be 3 54M -92:-94 100 EP WLAN_9B 00:02:cf:5d:3c:34 4 54M -91:-94 100 EPSB WLAN_01 00:60:b3:f3:b8:ba 10 54M -153:-96 200 EPSB Livebox-6A50 00:1d:d9:5d:c9:eb 1 54M -94:-95 100 EP WPA FON_Lynch 00:18:84:80:70:3d 7 54M -94:-95 100 ES WME ATH WLAN_C6 00:1a:2b:68:f5:31 3 54M -90:-90 100 EP default 00:01:38:50:ce:b5 1 54M -93:-93 100 ES MyPlace 00:18:84:81:d3:be 5 54M -95:-95 100 EPS WPA WME ATH Livebox-A780 00:1e:4c:39:03:9d 1 54M -35:-96 100 E WLAN_09 00:60:b3:f7:13:2e 9 54M -95:-96 200 EPSB WLAN_1F 00:01:38:65:25:c9 6 54M -93:-94 100 EPS WME WLAN_0D 00:02:cf:6c:08:59 9 54M -96:-95 100 EPS My current AP is MYNET, the AP is located right next to my BSD box that did the scan. It appears that there are others that actually provide better signal ?? First - how do I interpret the S:N numbers? Less negative S is better? Are there any units to this number? Second, should I move to a different channel or is it irrelevant as long as I use 6 or 11 since S ~ N in most cases? Thanks, Erik -- Erik Nørgaard Ph: +34.666334818 http://www.locolomo.org
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