Date: Mon, 9 Apr 2012 23:26:13 +0400 From: Lev Serebryakov <lev@freebsd.org> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-wireless@freebsd.org Subject: Re: request for testing: please test -head ath 11n stuff Message-ID: <5110227587.20120409232613@serebryakov.spb.ru> In-Reply-To: <CAJ-Vmokhfmfeb9UjBxdUW5agejq1sGmytXoTttuhX%2BpenXjJQQ@mail.gmail.com> References: <CAJ-Vmoke1Krqow0T34qUE3wM=Ka=uePdmbjYxk1Ly0gBCKbgTQ@mail.gmail.com> <165226504.20120408192539@serebryakov.spb.ru> <1322303419.20120408233657@serebryakov.spb.ru> <CAJ-Vmon_jaUsZQDRx4bAg-HgNhYjSnLy1gsB5oJ_ZWkR=prAzw@mail.gmail.com> <1353140683.20120409123158@serebryakov.spb.ru> <CAJ-Vmokhfmfeb9UjBxdUW5agejq1sGmytXoTttuhX%2BpenXjJQQ@mail.gmail.com>
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Hello, Adrian. You wrote 9 =D0=B0=D0=BF=D1=80=D0=B5=D0=BB=D1=8F 2012 =D0=B3., 22:30:14: > Does that fancy bit of equipment work in some kind of spectrum > analyser mode? I wonder what _kind_ of signal you're seeing. It works only in spectrum analyzer mode (it doesn't know anything about WiFi & Ko, all WiFi-related "annotating" info is extracted from regular WiFi adapter), and it shows very limited in bandwidth (exactly channel 6-centered 802.11g transmission, with almost no signal outside this band) very strong (-10 -- -15 dBi) signal, when my AP was detected as -40 dBi (when my AP is on channel 1 and transmitting, it becomes strongest signal on this channel, so it could be easily seen at spectorgram). This channel is occuped by 4 or 5 different hotspots according to WiFi card, but all of them have very low RSSI. It think, it could be surveillance / security camera with non-WiFi 2.4 Ghs transmitter, as signal is very uniform -- when WiFi AP or client are transmitting here are some regular spots without signal on spectorgram and some variance in signal strength, but this signal is very stable, without pauses or any significant variation. Unfortunately, I didn't take any screenshots, and this card was at my home only for 3 hours :) --=20 // Black Lion AKA Lev Serebryakov <lev@serebryakov.spb.ru>
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