Date: Thu, 11 Oct 2012 18:01:00 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: Outback Dingo <outbackdingo@gmail.com> Cc: freebsd-wireless@freebsd.org Subject: Re: Spectrum analysis? Message-ID: <1545199746.20121011180100@serebryakov.spb.ru> In-Reply-To: <CAKYr3zwZuXpaLi5EmJsVw0xmkhmT5s6ebcc8CRh-pXt1pHy66w@mail.gmail.com> References: <CAKwdyT7rdFwRNozR=vtkoTKO-mTeefga_ZfoWERwGRXd%2BJZkLA@mail.gmail.com> <5072FA32.8030905@gmail.com> <CAKYr3zwZuXpaLi5EmJsVw0xmkhmT5s6ebcc8CRh-pXt1pHy66w@mail.gmail.com>
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Hello, Outback. You wrote 8 =EE=EA=F2=FF=E1=F0=FF 2012 =E3., 22:58:51: OD> Wi-Spy USB 2.4 Ghz Spectrum Analyzer, I believe the software builds on = FreeBSD It is not true Spectrum Analyzer. It is 2.4Ghz modem, sampled for each channel's RSSI in round-robin algorithm (256 channels for full 2.4Ghz diapason, maybe less), with large delays (as modem need to be resetted on channel change). It is very cheap hardware with very inaccurate results :( --=20 // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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