Return-Path: <owner-rsgb_lf_group@blacksheep.org> X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: * X-Spam-Status: No, score=1.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,RCVD_IN_SORBS_WEB,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v4Q8Rf0w013533 for <sq5bpf@lipkowski.org>; Fri, 26 May 2017 10:27:43 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dEAWw-0000og-Pp for rs_out_1@blacksheep.org; Fri, 26 May 2017 09:23:30 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dEAWo-0000oX-8Z for rsgb_lf_group@blacksheep.org; Fri, 26 May 2017 09:23:22 +0100 Received: from gmy2-mh810.smtproutes.com ([94.186.192.139]) by relay1.thorcom.net with esmtp (Exim 4.89) (envelope-from <luis@vigilant.es>) id 1dEAWl-0004Sl-2c for rsgb_lf_group@blacksheep.org; Fri, 26 May 2017 09:23:20 +0100 X-Katharion-ID: 1495786977.66545.gmy2-mh810 Received: from servigilant.vigilant.es ([85.60.35.36]) by gmy2-mh810.smtproutes.com [(94.186.192.139)] with ESMTP via TCP (TLSv1/TLS_RSA_WITH_AES_256_CBC_SHA); 26 May 2017 08:22:57 +0000 Received: from servigilant.vigilant.local ([fe80::c40d:8140:d722:5448]) by servigilant.vigilant.local ([fe80::c40d:8140:d722:5448%13]) with mapi id 14.03.0123.003; Fri, 26 May 2017 10:22:55 +0200 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= <luis@vigilant.es> To: "rsgb_lf_group@blacksheep.org" <rsgb_lf_group@blacksheep.org> Thread-Topic: VLF: EbNaut tonite, 'SMS' via VLF Thread-Index: AQHS1ZaOlQLjwJJvBkCYopqHcmw1ZqIGQbMg Date: Fri, 26 May 2017 08:22:54 +0000 Message-ID: <579355A36AEE9D4FA555C45D556003AB8FE81ADE@servigilant.vigilant.local> In-Reply-To: <59273F3E.8000608@posteo.de> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.2] MIME-Version: 1.0 X-Scan-Signature: d7907c3bf895ca41e0bedc3fa074f0d4 Subject: RE: VLF: EbNaut tonite, 'SMS' via VLF Content-Type: text/plain; charset="iso-8859-1" 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 X-Scanned-By: MIMEDefang 2.75 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by lipkowski.org id v4Q8Rf0w013533 Status: RO X-Status: X-Keywords: X-UID: 11774 Hi VLF It is going to be hard to keep this rate of achievemts ;-) Congratulations to all the team involved. Really motivating experiments Indeed harder than EME !! First man used bands revisited with new technologies Sounds like sexing photons, may be ?? ;-) 73 de Luis EA5DOM -----Mensaje original----- De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de DK7FC Enviado el: jueves, 25 de mayo de 2017 22:32 Para: rsgb_lf_group@blacksheep.org Asunto: Re: VLF: EbNaut tonite, 'SMS' via VLF Hi Paul, VLF, That's amazing! A 'SMS' via VLF over ~ 25 wavelengths distance on the 36 km band, from a fixed antenna, in less than a day and without stacking! Again i think back to 2010 :-) Such a result in late May! We used to say that VLF won't work in summer, because of the high QRN levels... I'm impressed! 73, Stefan Am 25.05.2017 21:50, schrieb Paul Nicholson: > > Stefan wrote: > > > Well, let's try something for the record list again: > > > f = 8270.100000 Hz > > Start time: 24.May.2017 20:00:00 UTC > > Symbol period: 10 s > > Characters: 160 ( 1 SMS length :-) ) CRC bits: 10 Coding 8K21A > > Duration: 22h > > Copied > > "THIS IS THE FIRST SMS SENT OVER VLF BY RADIO AMATEURS. > THANKS TO PAUL NICHOLSON, DL4YHF AND DF6NM FOR SOFTWARE > DEVELOPMENTS. JOIN IN THE EXPERIMENTS! 73, DK7FC" > > Rank 0, constant reference phase; > Eb/N0 = +0.6 dB; > BER 27.3%; > carrier S/N: 30.17 dB in 12.6 uHz, > -18.81 dB in 1Hz, > -52.79 dB in 2.5kHz; > > That's a new record message length for VLF. > > -- > Paul Nicholson > -- >