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 v9JGxgJG000623 for ; Thu, 19 Oct 2017 18:59:44 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1e5E5p-0003Aw-Ed for rs_out_1@blacksheep.org; Thu, 19 Oct 2017 17:54:49 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1e5E5p-0003An-41 for rsgb_lf_group@blacksheep.org; Thu, 19 Oct 2017 17:54:49 +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 ) id 1e5E5m-0002VP-9s for rsgb_lf_group@blacksheep.org; Thu, 19 Oct 2017 17:54:47 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 1EE2C20804 for ; Thu, 19 Oct 2017 18:54:43 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3yHw5H2mjHz10Hm for ; Thu, 19 Oct 2017 18:54:43 +0200 (CEST) Message-ID: <59E8D8D2.2010109@posteo.de> Date: Thu, 19 Oct 2017 18:54:42 +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: <15f35837e92-c0f-89b8@webjas-vac110.srv.aolmail.net> In-Reply-To: <15f35837e92-c0f-89b8@webjas-vac110.srv.aolmail.net> 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: Markus, Maybe it is another effect that no one has observed until now: At night, the distance between Heidelberg and Nürnberg seems to be shorter, about 0.5 lambda on 5170 Hz. Genial! :-) 73, Stefan [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 85c54099682e8e65d9e25bf804a68673 Subject: Re: VLF: 5170.0025 Hz Content-Type: multipart/alternative; boundary="------------030601090305060107070207" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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 This is a multi-part message in MIME format. --------------030601090305060107070207 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Markus, Maybe it is another effect that no one has observed until now: At night, the distance between Heidelberg and Nürnberg seems to be shorter, about 0.5 lambda on 5170 Hz. Genial! :-) 73, Stefan Am 19.10.2017 18:42, schrieb Markus Vester: > Despite constant transmit antenna current, my signal level on Stefan's > grabber dropped very significantly over the hours between midday and > evening. This may be the day-night effect again: As the distance > between Heidelberg and Nürnberg (178 km) is shorter than Heidelberg to > Amberg (230 km), the skywave is steeper and the extra path relative to > groundwave is about 20% longer. Thus a similar diurnal effect may now > happen at lower frequency. > > Best 73, > Markus > > -----Ursprüngliche Mitteilung----- > Von: Markus Vester > An: rsgb_lf_group > Verschickt: Do, 19. Okt 2017 14:29 > Betreff: VLF: 5170.0025 Hz > > Since 11:46 UT I'm transmitting a carrier on 5170.0025 Hz, antenna > current 0.21 A into approx. 8 m effective height. It looks like nice > peaks are building up on the grabbers in Heidelberg and Amberg. > > Best 73, > Markus (DF6NM) > --------------030601090305060107070207 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Markus,

Maybe it is another effect that no one has observed until now: At night, the distance between Heidelberg and Nürnberg seems to be shorter, about 0.5 lambda on 5170 Hz. Genial! :-)

73, Stefan

Am 19.10.2017 18:42, schrieb Markus Vester:
Despite constant transmit antenna current, my signal level on Stefan's grabber dropped very significantly over the hours between midday and evening. This may be the day-night effect again: As the distance between Heidelberg and Nürnberg (178 km) is shorter than Heidelberg to Amberg (230 km), the skywave is steeper and the extra path relative to groundwave is about 20% longer. Thus a similar diurnal effect may now happen at lower frequency.    

Best 73,
Markus

-----Ursprüngliche Mitteilung-----
Von: Markus Vester <markusvester@aol.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 19. Okt 2017 14:29
Betreff: VLF: 5170.0025 Hz

Since 11:46 UT I'm transmitting a carrier on 5170.0025 Hz, antenna current 0.21 A into approx. 8 m effective height. It looks like nice peaks are building up on the grabbers in Heidelberg and Amberg.

Best 73,
Markus (DF6NM)

--------------030601090305060107070207--