Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w6TLxDOq011243 for ; Sun, 29 Jul 2018 23:59:16 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fjtdt-0007gK-34 for rs_out_1@blacksheep.org; Sun, 29 Jul 2018 22:54:21 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fjtd3-0007g4-Om for rsgb_lf_group@blacksheep.org; Sun, 29 Jul 2018 22:53:29 +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 4.91_59-0488984) (envelope-from ) id 1fjtd0-0001v9-G5 for rsgb_lf_group@blacksheep.org; Sun, 29 Jul 2018 22:53:27 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 7239121139 for ; Sun, 29 Jul 2018 23:53:25 +0200 (CEST) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1532901205; bh=wFlxvfiDUEMM8g6Z3uk64E1qXIG4z5FJmKD3cIwKhfA=; h=Date:From:To:Subject:From; b=Hj9GRwapvmSKNJzvwliDV4iO5ClKZ/Aj+3966gx0QntSV/nRFwcIfeCmOEhEWM13a ChO6VvxIKZcRhW+pU22WU47pH1U2Xnzw7hsy0rnrT0c9JpDhlMqaFrmvhGur/dj0aD w6Yq5zeOIIXJ0BNEJmZdfLmTa+hSJxcKVkg1+xTYo0QjwXkOeU4P0ALJ6kDtePgU2V kSPSE3IBQ+S4e6omaZAOW9i+JWzUdIYJ6cZgYrVjbu0Gn3ZReJqIz+vmXwr/MChPiN CjcprS/QaWFA1hzBcvwuBIC4mA4DVoqxlHZtOHQvrBCvAN9RXWD4IjR49QE79H18FY 4W99H8QXJ104g== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 41dxKK09NGz9rxF for ; Sun, 29 Jul 2018 23:53:24 +0200 (CEST) Message-ID: <5B5E3754.402@posteo.de> Date: Sun, 29 Jul 2018 23:53:24 +0200 From: DK7FC 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: <950e7b1c-8eab-0df9-9a15-abbc823545a4@gmail.com> <221ba650-6597-261f-4c6e-0089cb0b6a4d@gmail.com> In-Reply-To: <221ba650-6597-261f-4c6e-0089cb0b6a4d@gmail.com> X-Spam-Score: -2.3 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Hello Steinar, Placing two electrodes into sea-water will give a low resistance but no radiation resistance, so the efficiency will be poor. Maybe you own one of the nice islands up there in Norway? A stony mountain sourrounded by sea water and then a loop from the sea to the top of the mountain and then back to the sea. That would be ideal. [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.66 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: f62c7cf8eeb8e5a327b71719e9bffff1 Subject: Re: LF: Earth antenna transmissions using sea water Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 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 Hello Steinar, Placing two electrodes into sea-water will give a low resistance but no radiation resistance, so the efficiency will be poor. Maybe you own one of the nice islands up there in Norway? A stony mountain sourrounded by sea water and then a loop from the sea to the top of the mountain and then back to the sea. That would be ideal. 73, Stefan Am 29.07.2018 23:41, schrieb LA5VNA: > > Hi all , long time > > I'm thinking of doing an experiment with an "earth antenna" in sea > water. I have a cabin located just 15m from the sea. What effect will > sea water have, if I place two electrodes ca 250 meters apart from > each other in the sea outside the cabin? > > The frequency I will use is 8KHz. > > LA5VNA Steinar > > > > > > >