Return-Path: <owner-rsgb_lf_group@blacksheep.org> 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 v3AEn9mw021983 for <sq5bpf@lipkowski.org>; Mon, 10 Apr 2017 16:49:10 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cxaZx-0004qS-8W for rs_out_1@blacksheep.org; Mon, 10 Apr 2017 15:46:05 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cxaZw-0004qJ-Ly for rsgb_lf_group@blacksheep.org; Mon, 10 Apr 2017 15:46:04 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from <selberdenken@posteo.de>) id 1cxaZr-0008Ee-Ti for rsgb_lf_group@blacksheep.org; Mon, 10 Apr 2017 15:46:03 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 153FC20D05 for <rsgb_lf_group@blacksheep.org>; Mon, 10 Apr 2017 16:45:59 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3w1tKL5t3WzyxY for <rsgb_lf_group@blacksheep.org>; Mon, 10 Apr 2017 16:45:58 +0200 (CEST) Message-ID: <58EB9AA6.1010804@posteo.de> Date: Mon, 10 Apr 2017 16:45:58 +0200 From: DK7FC <selberdenken@posteo.de> User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <58EA2389.9070107@posteo.de> <519a2968-f0e0-e779-a1e9-c3e1e0085ba8@psk31.plus.com> In-Reply-To: <519a2968-f0e0-e779-a1e9-c3e1e0085ba8@psk31.plus.com> X-Scan-Signature: 4b5b5ebe37a4c4f430f59bc35c1947b0 Subject: Re: VLF: DFCW-6000 Content-Type: text/plain; charset=ISO-8859-15; 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: RO X-Status: X-Keywords: X-UID: 11202 Eddie, What i wanted to suggest: What about a loop as an alternative antenna? With 2 soundcards you could run 2 spectrograms comparing both antennas. You know the loop in my tree is a single turn loop with just 1.2m diameter out of copper tube which has 10mm diameter. It is a non resonated loop with a ferrite transformer (Al~10nH), i.e. 1 single primary turn and about 100 secondary turns connected to the preamp. It could help to reduce the QRN in summer. But maybe the QRM becomes even higher. On the other side you can eventually cancel out the QRM, maybe worth a try. Or go /p, e.g.. here: http://no.nonsense.ee/qth/map.html?qth=IO92MG54RP&from=IO92MG54MO :-) 73, Stefan Am 10.04.2017 09:37, schrieb g3zjo: > Hi Stefan > > Conditions are not as good during daylight as when you decided to give > DFCW a try in 424 uHz. It will be interesting to see what happens > during today. > > There was a glitch also at the start from my end. When I arrived home > the shack had been locked up and in full sunlight, soundcard error was > around 3.7ppm, I decided that was maybe a bit near to 5ppm with the > hottest day of the year in progress and upped the limit to 10ppm, not > realising that SpecLab would do its funny little scroll forward trick. > > Attached is a view of D K - with the gap produced by the scroll cut > out. A pretty marginal D, it may have been compressed by the scroll > forward, but it is there. > > 73 Eddie G3ZJO > > > On 09/04/2017 13:05, DK7FC wrote: >> VLF, >> >> Today, 12 UTC, i'm trying to leave my call on G3ZJOs 8270 Hz 424 uHz >> grabber. It may be visible on other spectrograms as well... >> >> 73, Stefan >> >> >> >