Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS,SUBJ_ALL_CAPS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: : mailn 1480; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v3DDlNDB013760 for ; Thu, 13 Apr 2017 15:47:25 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cyf1w-0002n5-QW for rs_out_1@blacksheep.org; Thu, 13 Apr 2017 14:43:24 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cyf1v-0002mw-9j for rsgb_lf_group@blacksheep.org; Thu, 13 Apr 2017 14:43:23 +0100 Received: from smtp-out-1.talktalk.net ([62.24.135.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1cyf1s-0005hJ-Gd for rsgb_lf_group@blacksheep.org; Thu, 13 Apr 2017 14:43:22 +0100 Received: from [192.168.1.3] ([78.150.101.242]) by smtp.talktalk.net with SMTP id yf1qcSO6G0Kuvyf1qcavMh; Thu, 13 Apr 2017 14:43:19 +0100 X-Originating-IP: [78.150.101.242] X-Spam: 0 X-OAuthority: v=2.2 cv=RZjSMBlv c=1 sm=1 tr=0 a=zSPPKdXLYhWsOVDzq1e+mg==:117 a=zSPPKdXLYhWsOVDzq1e+mg==:17 a=N659UExz7-8A:10 a=xh89qMVdtUvk5icKWfoA:9 a=pILNOxqGKmIA:10 To: rsgb_lf_group@blacksheep.org References: <58EA2389.9070107@posteo.de> <519a2968-f0e0-e779-a1e9-c3e1e0085ba8@psk31.plus.com> <58EB9AA6.1010804@posteo.de> From: g3zjo Message-ID: Date: Thu, 13 Apr 2017 14:43:21 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: X-Antivirus: Avast (VPS 170413-0, 13/04/2017), Outbound message X-Antivirus-Status: Clean X-CMAE-Envelope: MS4wfMqos9YybXe7zRuM9PtHFiftyMzYI9DNHd23YeQxj5n+sHUBj3QV99WzLdsIEdMeF3XkXRYOcEqTk7pE5cmUU+YV+a/0XKsYJPuvr/T6J8lZr/aKCAvp 0/nx2K3xLb+kEc3gsNvjceTqVXrbmIRmrk19iLKxln+im2iw9Oz/3gv80IKhgy+PCfwpHBrz0qnFRQ== X-Scan-Signature: 4d4a9e8f68fb15c54898568240f542c5 Subject: Re: VLF: DFCW-6000 Content-Type: text/plain; charset=windows-1252; format=flowed 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 2.75 Status: O X-Status: X-Keywords: X-UID: 11256 On 13/04/2017 08:27, John Bache G7JMZ wrote: > Blue sky idea: Hi John Good thinking. I think the hum filters used in SpectrumLab specificity the Paul Nicholson ones work in that manner. A lot of the mains borne interference is from consumer gadgets with switch mode supplies, causing bands of QRM right up to 7.5kHz plus, worse at the moment due to school holidays I suspect. 73 Eddie G3ZJO