Return-Path: X-Spam-DCC: paranoid 1117; 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=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,RATWARE_GECKO_BUILD,SPF_PASS 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 u47AkPOj031108 for ; Sat, 7 May 2016 12:46:25 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ayzg3-0004Yz-Aq for rs_out_1@blacksheep.org; Sat, 07 May 2016 11:41:39 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ayzg2-0004Yq-Se for rsgb_lf_group@blacksheep.org; Sat, 07 May 2016 11:41:38 +0100 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1ayzg1-0003Ls-AR for rsgb_lf_group@blacksheep.org; Sat, 07 May 2016 11:41:37 +0100 Received: from pn.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 6E14A3273E4 for ; Sat, 7 May 2016 11:40:14 +0100 (BST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 27D3F400196 for ; Sat, 7 May 2016 10:41:36 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <40b8e5c6692149a7911fe77631ebb33b@kabelmail.de> <572BB679.2040107@posteo.de> <572BE449.5010806@abelian.org> <279E0DEFDAFA4C849152DBBA3BFEDE8C@White> <572C5E72.7010404@posteo.de> <912731037.20160506233059@mterrier.net> <572D1111.9030302@posteo.de> <572D9843.7060402@abelian.org> <572DBBD3.3020709@posteo.de> From: Paul Nicholson Message-ID: <572DC660.5050007@abelian.org> Date: Sat, 7 May 2016 10:41:36 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <572DBBD3.3020709@posteo.de> X-Scan-Signature: b77892ad90d0261eaf071f4f6cf31464 Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz Content-Type: text/plain; charset=utf-8; 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 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 8020 > The message is correct. It is the first digi mode > message on 6.47 kHz. Close to the limit and could not be done with any other mode. The average signal was only 15dB in 19.5 uHz! But at least we now have a stake in the ground at 6.47, I can probably squeeze another dB out of it after some more tweaking. Plus, it was a noisy summer night. I'll have a look now at your 6480 carrier to do some more adjustment. Continuing to try for your first message but I'm probably still 2 or 3dB short. The day/night phase change isn't a problem, interesting that it isn't less than at 8.27 kHz but it's complicated at these short ranges. Markus I hope you can get the rx away from that railway! Even if you can find a gap in the harmonics, you've still got the nearby harmonics restricting the action of the sferic blanker. -- Paul Nicholson --