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 w0OMF4J6002065 for ; Wed, 24 Jan 2018 23:15:07 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eeTFZ-00014z-Qx for rs_out_1@blacksheep.org; Wed, 24 Jan 2018 22:10:33 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eeTFZ-00014q-HF for rsgb_lf_group@blacksheep.org; Wed, 24 Jan 2018 22:10:33 +0000 Received: from omr-a001e.mx.aol.com ([204.29.186.53]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1eeTFV-00077c-RD for rsgb_lf_group@blacksheep.org; Wed, 24 Jan 2018 22:10:32 +0000 Received: from mtaomg-aaj01.mx.aol.com (mtaomg-aaj01.mx.aol.com [172.27.3.207]) by omr-a001e.mx.aol.com (Outbound Mail Relay) with ESMTP id 688403800086 for ; Wed, 24 Jan 2018 17:10:26 -0500 (EST) Received: from core-ace01g.mail.aol.com (core-ace01.mail.aol.com [172.27.23.1]) by mtaomg-aaj01.mx.aol.com (OMAG/Core Interface) with ESMTP id E772538000087 for ; Wed, 24 Jan 2018 17:10:25 -0500 (EST) Received: from 188.194.222.230 by webjas-vab140.srv.aolmail.net (10.96.18.143) with HTTP (WebMailUI); Wed, 24 Jan 2018 17:10:24 -0500 Date: Wed, 24 Jan 2018 17:10:25 -0500 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <1612a38da75-1721-129c52@webjas-vab140.srv.aolmail.net> In-Reply-To: <5A68CB59.4080302@posteo.de> MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.194.222.230] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1516831826; bh=Hz2xuPbNujWfggDamIXfhuYBZzA0nj1BdKTfx51Z0ko=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=B0WcVeO5fhacZlmlI51yk9ddVf4JK4OOsFloe7UY5Puoo54mKuMKKaaLIHWF4MndX OUhnpR6U6yIi5UUp+ODDitd8y1F8oEZtKI2mZpAoveC5Kf+yYc93WwIADFUJ6iu7lI eSiTa2LGG3LrPC/uEqnRUMD589gltBHuVZUgIT+4= x-aol-sid: 3039ac1b03cf5a6904516c6d X-Spam-Score: 0.0 (/) 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 the administrator of that system for details. Content preview: >> (Unfortunately the directivity of that earth antenna is almost orthogonal to the RX sites of Paul, DL0AO and DK7FC :-/ No, an earth antenna radiates in the direction of the wire, approximately east-west... [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: c9c533f07c530c146486ecf89a00ebb1 Subject: Re: LF: RE: 136kHz WSPR experiment Content-Type: multipart/alternative; boundary="----=_Part_1593786_2067073442.1516831824501" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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 ------=_Part_1593786_2067073442.1516831824501 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable >> (Unfortunately the directivity of that earth antenna is almost orthogona= l to the RX sites of Paul, DL0AO and DK7FC :-/ No, an earth antenna radiates in the direction of the wire, approximately e= ast-west... 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Mi, 24. Jan 2018 19:27 Betreff: Re: LF: RE: 136kHz WSPR experiment Am 24.01.2018 15:00, schrieb Roger Lapthorn: > To get best results I think you need LOW conductivity around the=20 > earth-electrode "antenna", so the signal spread (and hence effective=20 > loop area) is greatest. Placing near a river is likely to give poor=20 > results in my experience. I agree. Best would be a stony mountain sourrounded by a small lake rivulet. For=20 example like here:=20 http://k7fry.com/grid/?qth=3DJN49AK54QN&from=3DJN49AK64OK !!!!=20 (Unfortunately the directivity of that earth antenna is almost=20 orthogonal to the RX sites of Paul, DL0AO and DK7FC :-/ Ah and BTW it would be good to have a good Restaurant near that=20 location, just to spend a few hours there while transmitting. Sharing some of my thoughts... :-) 73, Stefan ------=_Part_1593786_2067073442.1516831824501 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
>> (Unfortunately the directivity of t= hat earth antenna is almost orthogonal to the RX sites of Paul, DL0AO and D= K7FC :-/

No, an earth antenna radiates in the = direction of the wire, approximately east-west...

73, Markus

-----Urspr=C3=BCngliche Mitteilung-----
Von: DK= 7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsg= b_lf_group@blacksheep.org>
Verschickt: Mi, 24. Jan 2018 1= 9:27
Betreff: Re: LF: RE: 136kHz WSPR experiment



Am 24.01.2018 15:= 00, schrieb Roger Lapthorn:
> To get best results I think= you need LOW conductivity around the
> earth-electrode = "antenna", so the signal spread (and hence effective
> l= oop area) is greatest. Placing near a river is likely to give poor
> results in my experience.
I agree.

Best would be a stony mountain sourrounded by a small l= ake rivulet. For
example like here:
http://k7fry.com/grid/?qth=3DJN49AK54QN&from=3D= JN49AK64OK !!!!
(Unfortunately the directivity of tha= t earth antenna is almost
orthogonal to the RX sites of Pau= l, DL0AO and DK7FC :-/
Ah and BTW it would be good to have a= good Restaurant near that
location, just to spend a few ho= urs there while transmitting.
Sharing some of my thoughts...= :-)

73, Stefan

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