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 w0HMSNXj007111 for ; Wed, 17 Jan 2018 23:28:24 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ebw61-0005qA-Nr for rs_out_1@blacksheep.org; Wed, 17 Jan 2018 22:22:13 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ebw5u-0005q1-Ip for rsgb_lf_group@blacksheep.org; Wed, 17 Jan 2018 22:22:06 +0000 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1ebw5q-0004h7-Mm for rsgb_lf_group@blacksheep.org; Wed, 17 Jan 2018 22:22:05 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id 91362201AB for ; Wed, 17 Jan 2018 23:21:58 +0100 (CET) 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=1516227720; bh=qpUsQfZRlW9qhQNJiyhs6wyzr+luwuFGIhSFd5uHa8w=; h=Date:From:To:CC:Subject:From; b=fyaZ1o8Y+5L/MGJaCtZ3d963jl/6EdVgKD65dTQszlRYRd92d+W5ZGFN8GafFapm2 nnBr4SUeYur2b7Vdd1S7ijYuNTJRUR9/iXMapg7veCrvNeDRjHW3fk0O1mrDH+9w+n zWqupCxZpSwOYRmQgsg/ezRAVcENPx7yGQTp/yvO8cLeSPJOTIaOcEcn/VZR/W+stK AyN0u/O2OUCCUwQ+yb+z6+MreuUQsAxoHwElKLzuo1hrAWU8lDpSoZWFQvttp1eE+G 8+E85ZZqjOX6In8UbVd9rQE/HA4abLojpnZ4vzOHfbxEymsyL7Q/8z2N3DuIoocz+O w7gfzSnUlihnQ== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3zMM5K3T90z9rxF; Wed, 17 Jan 2018 23:21:57 +0100 (CET) Message-ID: <5A5FCC85.8060108@posteo.de> Date: Wed, 17 Jan 2018 23:21:57 +0100 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" CC: Renato Romero 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: Hi VLF, It took much longer than expected. Maybe 2/3 of the winter season is over now. Time to finally go the next step down to DC, another episode of the series "300 mA on..." :-) Since 22:15 UTC a *300 mA* carrier is running on *4470.1 Hz*. A wavelength of 67114 m :-) The ERP is about *25 uW*. For the next few hours the tree will show the signal over the 3.5 km distance: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html The carrier will run until 8 UTC (except the safety circuit trips dur to strong rain). The new coil arrangement consists out of 6 (5 + 1/3) stacked buckets. Here a photo showing the arrangement for 5170 Hz (4 + 1/3): http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/coil5170Hz.jpg Now there is just one more bucket in the stack. [...] 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 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 69d86b33142413363dd56bd312139bf4 Subject: VLF: 300 mA on 4470 Hz, 67 km band Content-Type: multipart/alternative; boundary="------------070607030809010408040503" 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=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 This is a multi-part message in MIME format. --------------070607030809010408040503 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Hi VLF, It took much longer than expected. Maybe 2/3 of the winter season is over now. Time to finally go the next step down to DC, another episode of the series "300 mA on..." :-) Since 22:15 UTC a *300 mA* carrier is running on *4470.1 Hz*. A wavelength of 67114 m :-) The ERP is about *25 uW*. For the next few hours the tree will show the signal over the 3.5 km distance: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html The carrier will run until 8 UTC (except the safety circuit trips dur to strong rain). The new coil arrangement consists out of 6 (5 + 1/3) stacked buckets. Here a photo showing the arrangement for 5170 Hz (4 + 1/3): http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/coil5170Hz.jpg Now there is just one more bucket in the stack. Before starting the next experiment on 970 Hz (probably next week), there are a few days now for a short message on the band. Will it be possible to transfer a message over to Alex, on the 1990 km landpath? It is less than 30 wavelengths distance :-) Also it would be a first detection and new lowest frequency for SQ5BPF in 920 km distance... With some optimism i think 2 characters can be possible in 4 nights: *f = 4470.100000 Hz Start time: 18.JAN.2018 16:00:00 UTC Symbol period: 60 s Characters: 2 CRC bits: 16 Coding 16K23A (NEW) Duration: 13h20min [hh:mm] Antenna current: 300 mA* 73, Stefan --------------070607030809010408040503 Content-Type: text/html; charset=ISO-8859-15 Content-Transfer-Encoding: 8bit Hi VLF,

It took much longer than expected. Maybe 2/3 of the winter season is over now. Time to finally go the next step down to DC, another episode of the series "300 mA on..." :-)

Since 22:15 UTC a 300 mA carrier is running on 4470.1 Hz. A wavelength of  67114 m :-) The ERP is about 25 uW.
For the next few hours the tree will show the signal over the 3.5 km distance: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
The carrier will run until 8 UTC (except the safety circuit trips dur to strong rain).
The new coil arrangement consists out of 6 (5 + 1/3) stacked buckets. Here a photo showing the arrangement for 5170 Hz (4 + 1/3): http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/coil5170Hz.jpg Now there is just one more bucket in the stack.

Before starting the next experiment on 970 Hz (probably next week), there are a few days now for a short message on the band.
Will it be possible to transfer a message over to Alex, on the 1990 km landpath? It is less than 30 wavelengths distance :-)
Also it would be a first detection and new lowest frequency for SQ5BPF in 920 km distance...

With some optimism i think 2 characters can be possible in 4 nights:

f = 4470.100000 Hz
Start time: 18.JAN.2018  16:00:00 UTC
Symbol period: 60 s
Characters: 2
CRC bits: 16
Coding 16K23A (NEW)
Duration: 13h20min [hh:mm]
Antenna current: 300 mA

73, Stefan
--------------070607030809010408040503--