Return-Path: Received: (qmail 41469 invoked from network); 12 Jul 2004 19:31:10 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore01.plus.net with SMTP; 12 Jul 2004 19:31:10 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1Bk6X0-000BDG-D6 for dave@picks.force9.co.uk; Mon, 12 Jul 2004 20:32:06 +0100 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1Bk6X0-000BD6-AX for dave@picks.force9.co.uk; Mon, 12 Jul 2004 20:32:06 +0100 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1Bk6W3-000AUa-JK for dave@picks.force9.co.uk; Mon, 12 Jul 2004 19:31:07 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Bk6VT-0001kz-1y for rs_out_1@blacksheep.org; Mon, 12 Jul 2004 20:30:31 +0100 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Bk6VS-0001kq-N5 for rsgb_lf_group@blacksheep.org; Mon, 12 Jul 2004 20:30:30 +0100 Received: from thumbler.kulnet.kuleuven.ac.be ([134.58.240.45]) by relay.thorcom.net with esmtp (Exim 4.34) id 1Bk6VP-00066K-Gu for rsgb_lf_group@blacksheep.org; Mon, 12 Jul 2004 20:30:30 +0100 Received: from localhost (localhost [127.0.0.1]) by thumbler.kulnet.kuleuven.ac.be (Postfix) with ESMTP id 11B5F137671 for ; Mon, 12 Jul 2004 21:30:22 +0200 (CEST) Received: from octavianus.kulnet.kuleuven.ac.be (octavianus.kulnet.kuleuven.ac.be [134.58.240.71]) by thumbler.kulnet.kuleuven.ac.be (Postfix) with ESMTP id 82A13137688 for ; Mon, 12 Jul 2004 21:30:20 +0200 (CEST) Received: from localhost (webmail2.cc.kuleuven.ac.be [134.58.242.4]) by octavianus.kulnet.kuleuven.ac.be (Postfix) with ESMTP id 749EEAEE34 for ; Mon, 12 Jul 2004 21:30:20 +0200 (CEST) Received: from 190-34.241.81.adsl.skynet.be (190-34.241.81.adsl.skynet.be [81.241.34.190]) by webmail2.kuleuven.be (IMP) with HTTP for ; Mon, 12 Jul 2004 21:30:20 +0200 Message-ID: <1089660620.40f2e6cc6c200@webmail2.kuleuven.be> Date: Mon, 12 Jul 2004 21:30:20 +0200 From: Rik Strobbe To: rsgb_lf_group@blacksheep.org References: <40F2CF45.30049.6CA6CC@localhost> In-Reply-To: <40F2CF45.30049.6CA6CC@localhost> MIME-Version: 1.0 User-Agent: Internet Messaging Program (IMP) 3.2-cvs X-Originating-IP: 81.241.34.190 X-Virus-Scanned: by KULeuven Antivirus Cluster X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=no,RCVD_IN_SORBS=0.1 Subject: Re: LF: Receivers Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Mike, I'm using a Kenwood TS440. Sensitivity is very good at 136kHz. A small loop (1x1m) can be used without pre-amp, if I am using the TX antenna for receiving I need at least 30dB attenuation before the LF noisefloor is about 10dB above the RX noisefloor (so you are sure to have full sensitivity - you can hear any signal that comes out of the noise - and optimal IMD behaviour) 73, Rik ON7YD Citeren Mike Dennison : > I am compiling a list of receivers and transceivers suitable > for 136kHz. I know most of the older radios already but > does anyone use a radio made in, say, the last five years > that they use sucessfully? If so, does it need an LF pre- > amp? Is the noise blanker any good on LF QRN and/or > Loran? Is a narrow filter fitted as standard? > > Your help would be appreciated. > > Thanks > > Mike, G3XDV > ========== > > >