From owner-freebsd-stable@FreeBSD.ORG Wed Sep 27 15:19:01 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D94B216A417 for ; Wed, 27 Sep 2006 15:19:01 +0000 (UTC) (envelope-from dudu.meyer@gmail.com) Received: from hu-out-0506.google.com (hu-out-0506.google.com [72.14.214.236]) by mx1.FreeBSD.org (Postfix) with ESMTP id DFBFA43D4C for ; Wed, 27 Sep 2006 15:19:00 +0000 (GMT) (envelope-from dudu.meyer@gmail.com) Received: by hu-out-0506.google.com with SMTP id 34so656642hui for ; Wed, 27 Sep 2006 08:18:59 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=lLvBJaK/0gwsRo8jskThR1TPJZE/nkrR1cFnVZSRVfDft7B0bmu6Qgj3rDS4GvJx9IxunU/4Js7QXibWiV1e+ZFfJHPm0HFaPL3ZLsxAn+FR68S131SqLQ2ISaugA85j4wF9TcuJMnYwX0rzvIijC07BqE+AwdMd5s8yK/sBM2A= Received: by 10.66.222.9 with SMTP id u9mr79114ugg; Wed, 27 Sep 2006 08:12:38 -0700 (PDT) Received: by 10.66.248.4 with HTTP; Wed, 27 Sep 2006 08:12:37 -0700 (PDT) Message-ID: Date: Wed, 27 Sep 2006 12:12:37 -0300 From: "Eduardo Meyer" To: "Pete French" , stable@freebsd.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: Cc: Subject: Re: 802.11 RSSI value displayed from ifconfig(8) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Sep 2006 15:19:01 -0000 Yes, this is the point. I dont always have a spectrum analiser to measure my dBm signal nor similar hardware, so I would like to have this information for each associated host in my freebsd access point, even if it is not fully accurate, since no software that does this, in fact is. I need something similar to what kismet can give me, but this kind of software (kismet, dstumbler) to give some reasonable useful information puts the interface in scan mode, and it is useless to me since all associated hosts will drop its association. So I wrote a program to converte from RSSI to other values, dBm or %. I just need a good formula now :-) specially for atheros On 9/27/06, Pete French wrote: > > Is this paper's information accurate regarding atheros? > > I have no idea - I think you would be best off calibrating it yourself > with a dBm metre if you can. The antenna will have an effect as well, as > will cabling between it and the receiver chip - all the usual things to > do with working with radio signal strength apply. > > -pete. > -- =========== Eduardo Meyer pessoal: dudu.meyer@gmail.com profissional: ddm.farmaciap@saude.gov.br