Return-Path: X-Spam-DCC: paranoid 1233; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, NO_REAL_NAME autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t41IiRCk015667 for ; Fri, 1 May 2015 20:44:27 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YoFsZ-0004hx-Od for rs_out_1@blacksheep.org; Fri, 01 May 2015 19:41:39 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YoFsZ-0004ho-GV for rsgb_lf_group@blacksheep.org; Fri, 01 May 2015 19:41:39 +0100 Received: from lb3-smtp-cloud3.xs4all.net ([194.109.24.30]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.85) (envelope-from ) id 1YoFsX-0002uI-Vp for rsgb_lf_group@blacksheep.org; Fri, 01 May 2015 19:41:38 +0100 Received: from [192.168.178.20] ([83.162.220.82]) by smtp-cloud3.xs4all.net with ESMTP id Niha1q00J1nG4D701ihc9w; Fri, 01 May 2015 20:41:36 +0200 From: roelof@ndb.demon.nl To: Terry Maurice , rsgb_lf_group@blacksheep.org Date: Fri, 01 May 2015 20:41:34 +0200 MIME-Version: 1.0 Message-ID: <5543C8DE.3797.74BED@roelof.ndb.demon.nl> In-reply-to: <5543BE59.4060705@execulink.com> References: , <215E9C5322354FF8BE0F54447F72043B@gnat>, <5543BE59.4060705@execulink.com> X-mailer: Pegasus Mail for Windows (4.70) Content-description: Mail message body X-Scan-Signature: 925300287489a1d7272e62b121c112aa Subject: Re: LF: Re: HP 3586C selective level meter for LF and MF Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 3040 Hello Terry, Before reverting to SDR's, I used a W&G SPM-30 for NDB hunting at LF. The unpleasant high pitch of 2000 Hz was changed to 500 Hz by either using a hardware downconvertor or a different internal X-tal. To get rid of intermod problems, I used a tuneable pre-amplifier. This set up worked very well indeed, especially due to the 24 Hz wide banwidth setting. 73, Roelof, pa0rdt