Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,RCVD_IN_DNSWL_MED, SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: : mailn 1480; Body=3 Fuz1=3 Fuz2=3 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 v428Fq95006010 for ; Tue, 2 May 2017 10:15:53 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1d5Sqf-0001DB-NS for rs_out_1@blacksheep.org; Tue, 02 May 2017 09:07:53 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1d5Sqd-0001D2-Mi for rsgb_lf_group@blacksheep.org; Tue, 02 May 2017 09:07:51 +0100 Received: from omr-m008e.mx.aol.com ([204.29.186.7]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1d5SqW-0007Nq-Qy for rsgb_lf_group@blacksheep.org; Tue, 02 May 2017 09:07:50 +0100 Received: from mtaomg-mcd02.mx.aol.com (mtaomg-mcd02.mx.aol.com [172.26.223.208]) by omr-m008e.mx.aol.com (Outbound Mail Relay) with ESMTP id 576E43800086 for ; Tue, 2 May 2017 04:07:42 -0400 (EDT) Received: from core-acx14c.mail.aol.com (core-acx14.mail.aol.com [10.74.43.1]) by mtaomg-mcd02.mx.aol.com (OMAG/Core Interface) with ESMTP id 9E14738000083 for ; Tue, 2 May 2017 04:07:41 -0400 (EDT) Received: from 188.192.95.60 by webprd-m59.mail.aol.com (10.74.63.42) with HTTP (WebMailUI); Tue, 02 May 2017 04:07:41 -0400 Date: Tue, 2 May 2017 04:07:41 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <15bc8335e11-14f8-139d0@webprd-m59.mail.aol.com> In-Reply-To: MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.192.95.60] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1493712462; bh=GUZME8wns1F7EUWGw0XLnRZkv5iJouKTvC2LUscIHac=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=tbANcu4EY7KHJJlRtAZSNQciQyxLPziQKLjrIpBhriVyV2upjPfFXFT0FGdKerGCc WC8S8+lVRTxUt8YpHfQMCXoxb01vaUK267QfUt1E8E4TnvGhSQ5rIzuzAMNfo4ptYj GRVfGmW92+2pzpYaEm0CbxWtF4WRVA5E5CFgwvfg= x-aol-sid: 3039ac1adfd059083e4d2e94 X-Scan-Signature: 896f9ee4f10c5db37812c155e804756d Subject: Re: VLF: New carrier on 6470.005 Hz Content-Type: multipart/alternative; boundary="----=_Part_97787_1642020619.1493712461325" 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 Status: RO X-Status: X-Keywords: X-UID: 11558 ------=_Part_97787_1642020619.1493712461325 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Very nice job! And great collaboration between Paul, Stefan and Alex. Congr= atulations! > The actual CRC size to use is not critical, just keep to less than about = 8 bits for 3 chars and less than about 6 bits for 2 chars. I understand that this would maximise the chance of a successful decode. Bu= t then, wouldn't we get swamped by false positives if there was only noise = and no message? Best 73, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Paul Nicholson An: rsgb_lf_group Verschickt: Mo, 1. Mai 2017 23:41 Betreff: Re: VLF: New carrier on 6470.005 Hz Success! Decoded 'RR' from ebnaut23_APR_1108_6470-1pps.wav Rank: 105871875 !! BER: 45.5% Carrier Eb/N0: 0.4 dB Carrier Es/N0: -19.17 dB Carrier S/N: 10.93 dB in 24.4 uHz, -35.19 dB in 1Hz, -69.17 dB in 2.5kHz Constant reference phase. Congratulations to Alex and Stefan for a new record for 6470 and EbNaut. -- Paul Nicholson -- ------=_Part_97787_1642020619.1493712461325 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Very nice job! And great collaboration between Paul, Ste= fan and Alex. Congratulations!

> The actual CRC size to use is no= t critical, just keep to less than about 8 bits for 3 chars and less than a= bout 6 bits for 2 chars.
I understand that this would maximise the chanc= e of a successful decode. But then, wouldn't we get swamped by false positi= ves if there was only noise and no message?

Best 73,
Markus (DF6N= M)


-----Urspr=C3=BCngliche Mitteilung-----
Von: Paul Nichols= on <vlf0403@abelian.org>
An: rsgb_lf_group <rsgb_lf_group@black= sheep.org>
Verschickt: Mo, 1. Mai 2017 23:41
Betreff: Re: VLF: New= carrier on 6470.005 Hz


Success!

Decoded 'RR' from = ebnaut23_APR_1108_6470-1pps.wav

Rank: 105871875 !!
BER: 45.5%
=
Carrier Eb/N0: 0.4 dB
Carrier Es/N0: -19.17 dB
Carrier S/N: 10.93= dB in 24.4 uHz, -35.19 dB in 1Hz, -69.17 dB in 2.5kHz

Constant refe= rence phase.

Congratulations to Alex and Stefan for a new record for= 6470 and
EbNaut.

--
Paul Nicholson
--

------=_Part_97787_1642020619.1493712461325--