Return-Path: Received: (qmail 8080 invoked from network); 25 Jan 2001 11:27:30 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by 10.226.25.101 with SMTP; 25 Jan 2001 11:27:30 -0000 Received: (qmail 18645 invoked from network); 25 Jan 2001 11:31:03 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 25 Jan 2001 11:31:03 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14LkR3-0004ml-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 25 Jan 2001 11:19:25 +0000 Received: from mail.cc.kuleuven.ac.be ([134.58.10.6]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14LkR2-0004mg-00 for rsgb_lf_group@blacksheep.org; Thu, 25 Jan 2001 11:19:24 +0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from LCBD15.fys.kuleuven.ac.be (LCBD15.fys.kuleuven.ac.be [134.58.80.15]) by mail.cc.kuleuven.ac.be (8.9.3/8.9.0) with SMTP id MAA199616 for ; Thu, 25 Jan 2001 12:19:12 +0100 Message-ID: <3.0.1.16.20010125131014.405704d0@mail.cc.kuleuven.ac.be> X-Sender: pb623250@mail.cc.kuleuven.ac.be X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Thu, 25 Jan 2001 13:10:14 To: rsgb_lf_group@blacksheep.org From: "Rik Strobbe" Subject: Re: LF: Stability In-reply-to: <3A70030D.8045.580470@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: At 10:42 25/01/01 -0000, G3XDV wrote: >I am now using my IC-706 directly on 136kHz, with a pre-amp/filter >and this works fine. hi Mike, what antenna are you using for receiving ? I'm using my transmitting antenna and found that I can add up to 40dB attenuation between antenna and RX (Kenwood TS440) before the bandnoise hits the RX noisefloor. I have 20dB attenuation all the time to prevent DCF39 from overloading the RX input (and causing IM products). I tried some preamps in my 'early days' on 136 but found them only a source of aditional IM products. 73, Rik ON7YD