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 w0CHFT7o006413 for ; Fri, 12 Jan 2018 18:15:32 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ea2jG-0006YP-9K for rs_out_1@blacksheep.org; Fri, 12 Jan 2018 17:02:54 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ea2jF-0006YG-Oh for rsgb_lf_group@blacksheep.org; Fri, 12 Jan 2018 17:02:53 +0000 Received: from smtp-out-2.talktalk.net ([62.24.135.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1ea2j8-0002ri-S7 for rsgb_lf_group@blacksheep.org; Fri, 12 Jan 2018 17:02:52 +0000 Received: from [192.168.1.5] ([78.150.116.228]) by smtp.talktalk.net with SMTP id a2j6eRhbPNSVVa2j6eyq0Y; Fri, 12 Jan 2018 17:02:44 +0000 X-Originating-IP: [78.150.116.228] X-Spam: 0 X-OAuthority: v=2.2 cv=NYGW7yL4 c=1 sm=1 tr=0 a=5H1Rr7Qd1Yzj1R+16aodZg==:117 a=5H1Rr7Qd1Yzj1R+16aodZg==:17 a=r77TgQKjGQsHNAKrUKIA:9 a=nN7BH9HXAAAA:8 a=I-vpdjsnAAAA:8 a=cMfweraTAAAA:8 a=fF9E96A_AAAA:8 a=3oc9M9_CAAAA:8 a=F3M5lZpKAAAA:8 a=TseynweAHiZgzte2bZoA:9 a=QEXdDO2ut3YA:10 a=wygtsRLyp0gA:10 a=pOlD9CYqQsoA:10 a=X6arCmaquA8A:10 a=1ClY0wHZAAAA:8 a=Q_FncG0QxSv2JBs3svwA:9 a=mOssC13szJgetnqe:21 a=_W_S_7VecoQA:10 a=SA1Ddc6mGmj6bEJBiaPk:22 a=71vlrorMnc7Sgip6xodF:22 a=YIvOpSJiOPCZuCJbRLiI:22 a=slCku8JSH3TyizEDQ3pD:22 a=Dwc7NTFYBNswNknFQOzV:22 To: rsgb_lf_group@blacksheep.org References: <160e7583ebc-1717-5df8f@webjas-vad003.srv.aolmail.net> From: g3zjo Message-ID: <251c8d69-5c08-9520-0f4f-41e39331b6f1@psk31.plus.com> Date: Fri, 12 Jan 2018 17:02:45 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: <160e7583ebc-1717-5df8f@webjas-vad003.srv.aolmail.net> Content-Language: en-GB X-Antivirus: Avast (VPS 180112-0, 12/01/2018), Outbound message X-Antivirus-Status: Clean X-CMAE-Envelope: MS4wfNDAR2BSYcBSj1QLLPlCN157TrYEZfz9CO8cU9d6jATMqzpY+ESg9XkBpTFGzhI8A/SURqKL49NLoUpzMxkoua6SqDvUG/D5YlHpKtNU0VPxB4DMaCIn Kn8XRlMO6Fm6Zn0HfozbJn9S5A9ABMfpzHSbzjahlLsy6+6LVe95Gp9/HnMLoAjjxfFRW27qKC4xpA== X-Spam-Score: 0.7 (/) 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 Marcus Thanks for the update, I have put my Grabber http://www.g3zjo.talktalk.net/vlfgrabber.htm on. The signal is a bit noisy here, I will try and find some of my alternative usr files which have filtering and may perform better. Despite all my good intentions to save my files in multiple places a lot have remained on old XP drives etc I suspect. [...] Content analysis details: (0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 HTML_MESSAGE BODY: HTML included in message 0.1 URIBL_SBL_A Contains URL's A record listed in the SBL blocklist [URIs: www.g3zjo.talktalk.net] 0.6 URIBL_SBL Contains an URL's NS IP listed in the SBL blocklist [URIs: www.g3zjo.talktalk.net] X-Scan-Signature: bc223f74149f392a7d9f3881f05f1e70 Subject: Re: ELF: Recent ZEVS activity Content-Type: multipart/alternative; boundary="------------6C4718CEABF601BC7AB8C18E" 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. --------------6C4718CEABF601BC7AB8C18E Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hi Marcus Thanks for the update, I have put my Grabber http://www.g3zjo.talktalk.net/vlfgrabber.htm on. The signal is a bit noisy here, I will try and find some of my alternative usr files which have filtering and may perform better. Despite all my good intentions to save my files in multiple places a lot have remained on old XP drives etc I suspect. 73 Eddie G3ZJO On 11/01/2018 22:30, Markus Vester wrote: > It looks like ZEVS (aka KPTF) is currently undergoing a period of > increased activity. SNR at DL0AO is no significantly better than it > used to be, so I suspect that transmit power might have been > increased. In addition, we have now enabled a 20 Hz filter and a > noiseblanker, which effectively suppresses local QRM bursts. > We find that in addition to the traditional three-digit repeated > telegrams based on 4-minute dashes, there is also a much faster FSK > mode with short dashes (about 10 or 12 seconds). These high-datarate > sequences are always initiated by a long dash on the highest > frequency, 83.2 Hz. > > Screenshots: > http://df6nm.bplaced.net/dl0ao/files/zevs_7.63mHz_180111_2114.png > http://df6nm.bplaced.net/dl0ao/files/zevs_183mHz_180108_0914.png > > DL0AO Grabber: > http://df6nm.bplaced.net/dl0ao/VLFgrabber/vlfgrabber_dl0ao_test.htm > > See also: > G3ZJO 2012-05-12: > https://g3zjoradio.wordpress.com/2012/05/12/more-on-82hz-radio-comms-zevs-13669381/ > DL4YHF 2008-08-29: http://dl4yhf.darc.de/t/vlf_experiments.htm > > Best 73, > Markus (DF6NM) > > > > -----Ursprüngliche Mitteilung----- > Von: Markus Vester > An: rsgb_lf_group > Verschickt: So, 1. Okt 2017 0:44 > Betreff: Re: ELF: ZEVS reception from a small loop > > Those ZEVS messages seem to consist of simple three-digit numbers. > With 0.2 Hz spacing, the frequency ranges 81 to 81.8 and 82.2 to 83 > Hz provide ten possible MFSK symbols. Each message is sent twice, > separated by a single 80.8 Hz dash. Consecutive messages are always > separated by the 82 Hz idle tone. > > Assuming that symbol frequencies are counted upwards from 0 to 4 and 5 > to 9, Stefan's screenshot would translate to > > ..7 486 128   731    941        473   018 > > 73, Markus > > ... --------------6C4718CEABF601BC7AB8C18E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Hi Marcus

Thanks for the update, I have put my Grabber http://www.g3zjo.talktalk.net/vlfgrabber.htm on. The signal is a bit noisy here, I will try and find some of my alternative usr files which have filtering and may perform better. Despite all my good intentions to save my files in multiple places a lot have remained on old XP drives etc I suspect.

73 Eddie G3ZJO


On 11/01/2018 22:30, Markus Vester wrote:
It looks like ZEVS (aka KPTF) is currently undergoing a period of increased activity. SNR at DL0AO is no significantly better than it used to be, so I suspect that transmit power might have been increased. In addition, we have now enabled a 20 Hz filter and a noiseblanker, which effectively suppresses local QRM bursts.
We find that in addition to the traditional three-digit repeated telegrams based on 4-minute dashes, there is also a much faster FSK mode with short dashes (about 10 or 12 seconds). These high-datarate sequences are always initiated by a long dash on the highest frequency, 83.2 Hz.

Best 73,
Markus (DF6NM)



-----Ursprüngliche Mitteilung-----
Von: Markus Vester <markusvester@aol.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: So, 1. Okt 2017 0:44
Betreff: Re: ELF: ZEVS reception from a small loop

Those ZEVS messages seem to consist of simple three-digit numbers. With 0.2 Hz spacing, the frequency ranges 81 to 81.8 and 82.2 to 83 Hz provide ten possible MFSK symbols. Each message is sent twice, separated by a single 80.8 Hz dash. Consecutive messages are always separated by the 82 Hz idle tone.

Assuming that symbol frequencies are counted upwards from 0 to 4 and 5 to 9, Stefan's screenshot would translate to

..7 486 128   731    941        473   018
 
73, Markus  

...

--------------6C4718CEABF601BC7AB8C18E--