Return-Path: Received: (qmail 15517 invoked from network); 29 Aug 2001 19:18:40 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 29 Aug 2001 19:18:40 -0000 Received: (qmail 18037 invoked from network); 29 Aug 2001 19:16:50 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 29 Aug 2001 19:16:50 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15cAit-00024T-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 29 Aug 2001 20:09:59 +0100 Received: from [203.96.92.23] (helo=mta7-rme.xtra.co.nz) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15cAio-00024N-00 for rsgb_lf_group@blacksheep.org; Wed, 29 Aug 2001 20:09:55 +0100 Received: from xtr743187 ([202.27.181.14]) by mta7-rme.xtra.co.nz with SMTP id <20010829190841.CXJY1311.mta7-rme.xtra.co.nz@xtr743187> for ; Thu, 30 Aug 2001 07:08:41 +1200 Message-ID: <001901c130be$0e72ab40$0eb51bca@xtr743187> From: "Vernall" To: rsgb_lf_group@blacksheep.org References: Subject: Re: LF: Receiver Date: Thu, 30 Aug 2001 07:07:11 +1200 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Tom G3OLB, > Talking of TS-850s, does anyone know why my TS-850 changes gain at > 500.000 KHz? Seems like an attenuator is switched in above 500 KHz. Is > there a mod to defeat it? The TS-850 is manufactured with an attenuator for the MF AM broadcast band (included within that band pass filter). The attenuator is made from surface mount resistors, on the underside of the PCB, so it is a fairly tricky job to rework. If you do a web search for TS-850 mods, you will find a text and figures as to how to remove the attenuator. 73, Bob ZL2CA