Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mk02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5761A380000CF; Fri, 19 Aug 2011 14:56:12 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QuUDx-0002PJ-Iv for rs_out_1@blacksheep.org; Fri, 19 Aug 2011 19:55:21 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QuUDx-0002PA-0F for rsgb_lf_group@blacksheep.org; Fri, 19 Aug 2011 19:55:21 +0100 Received: from nm11.bullet.mail.sp2.yahoo.com ([98.139.91.81]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1QuUDu-0000LR-QH for rsgb_lf_group@blacksheep.org; Fri, 19 Aug 2011 19:55:20 +0100 Received: from [98.139.91.70] by nm11.bullet.mail.sp2.yahoo.com with NNFMP; 19 Aug 2011 18:55:10 -0000 Received: from [98.139.91.35] by tm10.bullet.mail.sp2.yahoo.com with NNFMP; 19 Aug 2011 18:55:10 -0000 Received: from [127.0.0.1] by omp1035.mail.sp2.yahoo.com with NNFMP; 19 Aug 2011 18:55:10 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 232386.23345.bm@omp1035.mail.sp2.yahoo.com Received: (qmail 66305 invoked by uid 60001); 19 Aug 2011 18:55:09 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1313780109; bh=XZYHs+P8fZwMoXXblGVtgIc7svJiM/GJD9SG+Fqh5IE=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=58BM07h1qLv/D0A4k/n1iGKf6VKg/vT/tHKD8HNo0cas0Csln5Katgdr3pRTeT6onPIiLmod/w7aZzf1qbK7JgPZ1xJt1vc2YNzTiyKTOen8yJmDDSSsFfseEghtjPuLoDvm0cSxEPb6lyRfJDrgmqzgGsygT1Tz7pHzTKMHIps= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=6t6pjiz5NuN4rIgTb8upLxxJOImlqlKcsaf6qci3L0LbkzvvCeJpUCzJXn+nADQSGIcKvlsbdNX88idu/rzqkt/l059b3xN4p3fNxq5JH6j4JsB1wS74iEZLIDAKzzubuMvfXd7L7i5a0kp3h3n7omMd15Ir2auaDvyowmcukvw=; X-YMail-OSG: 7e8UrXkVM1lt3D82CCCZCsPBVyU9u14v3g0ziqFwmv5deFy .aMv_ZXAkf0CuUp9Y022AXmPDZwsbJnZ4Gl8cgcMNo1BpJdz2qBFe5QR9p6r i28tv.wJQMae113ClGeSyXVokeZ5i_QMx_lDtnE62L8Ka0SU09rcEE8O13Hv PjdpwAJu_rEaE3w00H7TPgn.iULxYD0L1gBV3BqKmHz0ViDPoGeNuFuTF1hi NzAXEH3M2pfbVLv13xPbpyt9YXuUNzQ4ak8Ze00___ZdhEMzv.aqYKaJpewV dTJbYamJ71G.1gRb2Z2FyywMjmcYWBcvGh19tmDZY35x2Uk31X3W.07iyIzp mEzAz7b6m2xXN.sZwg.RIY_lc.veRxkbxpU9MVQ3T55nFmg-- Received: from [87.6.203.160] by web111907.mail.gq1.yahoo.com via HTTP; Fri, 19 Aug 2011 11:55:09 PDT X-Mailer: YahooMailWebService/0.8.113.313619 References: <16BC8B3CA8672445BC2A29B4C14A26D4379ED2AAB4@exlnmb01.eur.nsroot.net> <4DF9EFD1.5010208@iup.uni-heidelberg.de> Message-ID: <1313780109.51443.YahooMailNeo@web111907.mail.gq1.yahoo.com> Date: Fri, 19 Aug 2011 11:55:09 -0700 (PDT) From: Daniele Tincani To: rsgb_lf_group@blacksheep.org In-Reply-To: <4DF9EFD1.5010208@iup.uni-heidelberg.de> MIME-Version: 1.0 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Ferrite wideband antennas? Content-Type: multipart/alternative; boundary="0-1263877987-1313780109=:51443" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=FORGED_YAHOO_RCVD,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:305449856:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d265.1 ; domain : yahoo.com DKIM : fail x-aol-sid: 3039ac1d61864e4eb1cc1100 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --0-1263877987-1313780109=:51443 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Hello LF,=0A=A0=0Aa very interesting discussion is in progress on the refle= ctor on ferrite rx antennas. My understanding however is that until now we = have been talking about narrow-band antennas. May I ask the experts if a wi= de-band ferrite antenna could be feasible, able=A0to=A0(partially) match th= e "panoramic" approach of SDR receivers, at least in the LF/NDB and/or MW b= ands? Such an "ideal" antenna would combine some advantages of air-cored lo= ops with a=A0reduced size (uhm... too "ideal" to be real :-))=0A=A0=0ARegar= ds=0ADaniele --0-1263877987-1313780109=:51443 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Hello LF,
 <= /div>
a very interesting discussion is in progress on the reflector on = ferrite rx antennas. My understanding however is that until now we have bee= n talking about narrow-band antennas. May I ask the experts if a wide-band = ferrite antenna could be feasible, able to (partially) match the = "panoramic" approach of SDR receivers, at least in the LF/NDB and/or MW ban= ds? Such an "ideal" antenna would combine some advantages of air-cored loop= s with a reduced size (uhm... too "ideal" to be real :-))
&n= bsp;
Regards
Daniele
 
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