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 w0P9kTAI003936 for ; Thu, 25 Jan 2018 10:46:31 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eee25-0003ZX-1m for rs_out_1@blacksheep.org; Thu, 25 Jan 2018 09:41:21 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eee24-0003ZO-04 for rsgb_lf_group@blacksheep.org; Thu, 25 Jan 2018 09:41:20 +0000 Received: from mail-ot0-x230.google.com ([2607:f8b0:4003:c0f::230]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eee1z-0001Qr-RP for rsgb_lf_group@blacksheep.org; Thu, 25 Jan 2018 09:41:18 +0000 Received: by mail-ot0-x230.google.com with SMTP id 44so6168892otk.8 for ; Thu, 25 Jan 2018 01:41:15 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=CQgzoIq729mmS3GtViHqUPmQPlKo3UZ2ZOeD40QlIDk=; b=cB5lHe+OfQqj/1qa5z/XJz1wCSjAIWXFQNTizXkQH7q/gmGuafKICnDl19oKmCDaQk sAbP9WfCFR80y+KZXfNslCMpi0L50m4EgyWOxgs1W+itdnyvJCFBL+r5fdGe1lYBoqdx fILvuQqCzbDxWYWwETGeg0PvNOgTvckr8CDmf4A83HldiTWys07kZaKiujrlbydMPKFO QkB2elX9W+y6gNNQIXBsI7LigJMWc2CNVDfjlZvcjoWk6qiIBxUZSENKDVHJMTtYOjWh sFzQkFO5rmDDxSXbUC7RkpgamVui7NRVBm/XYF9HQJPhcvZGYYj2jDS63sCT8WrLPZ5R a6Kw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=CQgzoIq729mmS3GtViHqUPmQPlKo3UZ2ZOeD40QlIDk=; b=Yy9pURsqzoA86r49IilQ7d9NwbwRLDJul+T813dbaUrww3QhRxN6IZoxXtC0PYMJ6b skpuaOrSJS8JpUDGpkTdTY6FtvS6v87UaWX5MkV0AKDG608BSIVLW75/bQPyFQjq7EtA nQMys9KnDnH96WBGXZpB8X8bXUOxm6UwGy66u9kVc4h2f7nVji2caMZddcR6YeUsnqZy vrculIrWjVLLdsFTRUD2v+OE8fZRtVfU2jli8EV7W29LTzjsArd18hZgo8G5rWRoDHhk pH21+0Aowvc8o/Ws9k5Ea9QI3r4z2xJ9QyJXNos3t0dRv35lUGo32VqbqFxynyUXd2d/ Z5RA== X-Gm-Message-State: AKwxytc3byuV8VNSGdq1QR0Iz9DLG1OBZaKuoLnybwAXxVcrqUkLH9+1 VzHW1Aqu5UqGdQaYeXFHQvM1AOE7P5AyRUd0/TAPng== X-Google-Smtp-Source: AH8x225s3mlRTG+ibrOIXbNjLGyyNDvIjLzktAWqNA4LSfrpPcdsEl1XpMTHv0QZrP8pL8orL/DyI80mY3S3i0I901w= X-Received: by 10.157.35.111 with SMTP id k44mr12044590otd.338.1516873273584; Thu, 25 Jan 2018 01:41:13 -0800 (PST) MIME-Version: 1.0 Received: by 10.157.28.166 with HTTP; Thu, 25 Jan 2018 01:41:13 -0800 (PST) In-Reply-To: <1612a38da75-1721-129c52@webjas-vab140.srv.aolmail.net> References: <5A68CB59.4080302@posteo.de> <1612a38da75-1721-129c52@webjas-vab140.srv.aolmail.net> From: Roger Lapthorn Date: Thu, 25 Jan 2018 09:41:13 +0000 Message-ID: To: "rsgb_lf_group@blacksheep.org" 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: Agreed - in the direction of the wire: in my case W-E is the best direction. By the way, last night I was on 630m WSPR RX with the earth-electrode "antenna" with a preamp in circuit and the shack PC on batteries. Best results yet with 23 *unique* stations spotted. I am sure a good Marconi will better it, but it does a very decent job. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rogerlapthorn[at]gmail.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: bde53fa3678f346afe39dd99e3e185db Subject: Re: LF: RE: 136kHz WSPR experiment Content-Type: multipart/alternative; boundary="001a113d0c28a4324e05639694a6" 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, TO_ADDRESS_EQ_REAL 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 --001a113d0c28a4324e05639694a6 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Agreed - in the direction of the wire: in my case W-E is the best direction= . By the way, last night I was on 630m WSPR RX with the earth-electrode "antenna" with a preamp in circuit and the shack PC on batteries. Best results yet with 23 *unique* stations spotted. I am sure a good Marconi will better it, but it does a very decent job. 73s Roger G3XBM On 24 January 2018 at 22:10, Markus Vester wrote: > >> (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... > > 73, Markus > > -----Urspr=C3=BCngliche Mitteilung----- > 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 > > earth-electrode "antenna", so the signal spread (and hence effective > > loop 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 lake rivulet. For > example like here: > http://k7fry.com/grid/?qth=3DJN49AK54QN&from=3DJN49AK64OK !!!! > (Unfortunately the directivity of that earth antenna is almost > orthogonal to the RX sites of Paul, DL0AO and DK7FC :-/ > Ah and BTW it would be good to have a good Restaurant near that > location, just to spend a few hours there while transmitting. > Sharing some of my thoughts... :-) > > 73, Stefan > > --001a113d0c28a4324e05639694a6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Agreed - in the direction of the wire: in my case W-E= is the best direction.

By the way, last night I w= as on 630m WSPR RX with the earth-electrode "antenna" with a prea= mp in circuit and the shack PC on batteries. Best results yet with 23 un= ique stations spotted. I am sure a good Marconi will better it, but it = does a very decent job.

73s
Roger G3XBM<= /div>

On 24 = January 2018 at 22:10, Markus Vester <markusvester@aol.com> wrote:
>> (Unf= ortunately the directivity of that earth antenna is almost orthogonal to th= e RX sites of Paul, DL0AO and DK7FC :-/

No,=C2=A0an earth ant= enna=C2=A0radiates in the direction of the wire, approximately east-west...=

73, Markus

-----Urspr=C3=BCngliche Mitteilung-----
Von: = DK7FC <selbe= rdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org&= gt;
Verschickt: Mi, 24. Jan 2018 19:27
Betreff: Re: LF: RE: 136kHz WS= PR experiment



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

Best would be a stony mountain sourrounded by a small = lake rivulet. For
example like here:
http://k7fry.= com/grid/?qth=3DJN49AK54QN&from=3DJN49AK64OK !!!!
(Unfor= tunately the directivity of that earth antenna is almost
orthogonal to = the RX sites of Paul, DL0AO and DK7FC :-/
Ah and BTW it would be good to= have a good Restaurant near that
location, just to spend a few hours t= here while transmitting.
Sharing some of my thoughts... :-)

73, S= tefan


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