Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-ma03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 9CE6038000093; Thu, 3 May 2012 06:34:45 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SPtLz-00056R-P5 for rs_out_1@blacksheep.org; Thu, 03 May 2012 11:33:43 +0100 Received: from [109.69.104.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SPtLz-00056I-9R for rsgb_lf_group@blacksheep.org; Thu, 03 May 2012 11:33:43 +0100 Received: from mbox2.netikka.net ([213.250.81.203]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1SPtLy-00055t-Hb for rsgb_lf_group@blacksheep.org; Thu, 03 May 2012 11:33:43 +0100 Received: from hupu.netikka.net (hupu [172.16.83.91]) by mbox2-feedback.netikka.net (Postfix) with ESMTP id 8B01321F531 for ; Thu, 3 May 2012 13:33:35 +0300 (EEST) Received: from w3mail.netikka.fi (w3mail-lb1.netikka.fi [81.209.31.92]) by hupu.netikka.net (Postfix) with ESMTP id 933FA4B005C for ; Thu, 3 May 2012 13:33:35 +0300 (EEST) Received: by w3mail.netikka.fi (Postfix, from userid 33) id 4CF0524009D61; Thu, 3 May 2012 13:33:35 +0300 (EEST) Received: from proxy.wartsila.com (proxy.wartsila.com [194.251.142.28]) by w3mail.netikka.fi (Horde Framework) with HTTP; Thu, 03 May 2012 13:33:35 +0300 Message-ID: <20120503133335.69981o91xm520hlw@w3mail.netikka.fi> Date: Thu, 03 May 2012 13:33:35 +0300 From: phl@netikka.fi To: rsgb_lf_group@blacksheep.org References: <4FA04D47.6070701@iup.uni-heidelberg.de> In-Reply-To: <4FA04D47.6070701@iup.uni-heidelberg.de> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Internet Messaging Program (IMP) H3 (4.3.11) X-Originating-IP: 194.251.142.28 X-Originating-node: 172.16.90.40 X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=disabled,NO_REAL_NAME=0.55 Subject: Re: LF: Basic LF understanding Content-Type: text/plain; charset=ISO-8859-15; DelSp="Yes"; format="flowed" Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_NAME 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: 0:2:426407584:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d600b4fa25f447a57 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none LF Quoting the initial posting by Stefan, regarding reception in South America= : "There is no chance for him to get the parts for building a preamp and =20 the IC703 seems to need a very high input signal" I can confirm first hand that the IC-703 is virtually dead down at 137 =20 kHz. My references are the Icom IC-R75, JRC NRD-91 and even the Icom =20 IC-718. Could we compile a list of known & tried suitable receivers for 137kHz ? BR Paul-Henrik, OH1LSQ Quoting Stefan Sch=E4fer : > LF! > > Has someone a very good link to basic understanding about LF? I mean =20 > the LF amateur radio stuff, all which one has to learn when starting =20 > rx-wise in our hobby! Maybe some ideas and examples, a good =20 > compliation. Not to complex and focusing on 137 kHz amateur radio? > For newcomers in the "LF-transmit-world" i recommend ON7YD's page =20 > http://www.strobbe.org/on7yd/136ant/ > Is there maybe something for receive newcomers? > > A collection of some links may help as well... > > Thanks in advance. > > 73, Stefan/DK7FC > >