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=HEADER_FROM_DIFFERENT_DOMAINS, HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: x.dcc-servers: mailn 104; 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 v4CFVwO4015260 for ; Fri, 12 May 2017 17:31:59 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1d9CT9-00078s-Lo for rs_out_1@blacksheep.org; Fri, 12 May 2017 16:27:03 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1d9CRS-00078X-J6 for rsgb_lf_group@blacksheep.org; Fri, 12 May 2017 16:25:18 +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 1d9CRP-0002tG-K0 for rsgb_lf_group@blacksheep.org; Fri, 12 May 2017 16:25:17 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 3B6D520C69 for ; Fri, 12 May 2017 17:25:14 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3wPYgs1mrXz108L for ; Fri, 12 May 2017 17:25:13 +0200 (CEST) Message-ID: <5915D3D8.5020205@posteo.de> Date: Fri, 12 May 2017 17:25:12 +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: <1494600546.203153967@f337.i.mail.ru> In-Reply-To: <1494600546.203153967@f337.i.mail.ru> X-Scan-Signature: f7f918e40888a44a70dddae14bd6a529 Subject: Re: LF: my results on VLF 05-08 May 2017 Content-Type: multipart/alternative; boundary="------------070707050900010506000307" 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: 11679 This is a multi-part message in MIME format. --------------070707050900010506000307 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hello Alex, I confirm the message, very well! Your first message on 6470 completely decoded by yourselfe. It is extremely close to the limit :-) 2 characters in 9 hours and 4 minutes over a 1990 km land path on the 46 km band in May! Probably beyond of what most amateurs can imagine! Maybe you can also find the message of 10.May.2017, 3 chars on 6470.1 Hz in daytime? 73, Stefan Am 12.05.2017 16:49, schrieb Alex K: > Hello VLF, Stefan, Paul > I have made many attempts of reprocessing of the file > "ebnaut07_MAY_0037_6470-1pps.wav" with little variations of time and > frequency offset and it seems I have interesting result: > > ebnaut-rx V0.7a > input file C:\EbNaut\ebnaut07_MAY_0037_6470-1pps.wav > sample rate 0.342935 per second > rx frequency 6470.1 > file start time 2017-05-06 17:59:34.790 > polynomial 16K21A > crc size 2 > number of chars 2 > block size 14 > symbol period 60.000 > number of symbols 544 > list length 20 > start offset 636.174 > freq offset 0.000009 > cores 4 > skipped 635.688979 seconds to start > initial reference phase 67.8 > --------------------------------------------- > ....... > --------------------------------------------- > found *73* > list rank 1 > reference phase 30 30 0 0 > carrier S/N 9.70 dB in 30.6 uHz, -35.44 dB in 1Hz, -69.42 dB in 2.5kHz > carrier Es/N0 -17.66 dB > carrier Eb/N0 -0.87 dB > info bit period 2863.16 seconds > symbol error rate 238/544 = 43.750 % > Es/N0 from symbol errors -19.0 dB > Eb/N0 from symbol errors -2.2 dB > Shannon capacity 1.5 bits/hour > Shannon efficiency 85.4 % > symbols file C:\EbNaut\ebnaut07_MAY_0037_6470-1pps-symbols.csv > elapsed 11 seconds > > 73! (?) > :) > rn3aus/Alex --------------070707050900010506000307 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello Alex,

I confirm the message, very well! Your first message on 6470 completely decoded by yourselfe. It is extremely close to the limit :-)
2 characters in 9 hours and 4 minutes over a 1990 km land path on the 46 km band in May! Probably beyond of what most amateurs can imagine!

Maybe you can also find the message of 10.May.2017, 3 chars on 6470.1 Hz in daytime?

73, Stefan




Am 12.05.2017 16:49, schrieb Alex K:
Hello VLF, Stefan, Paul
I have made many attempts of reprocessing of the file "ebnaut07_MAY_0037_6470-1pps.wav" with little variations of time and frequency offset and it seems I have interesting result:

ebnaut-rx V0.7a
input file C:\EbNaut\ebnaut07_MAY_0037_6470-1pps.wav
sample rate 0.342935 per second
rx frequency 6470.1
file start time 2017-05-06 17:59:34.790
polynomial 16K21A
crc size 2
number of chars 2
block size 14
symbol period 60.000
number of symbols 544
list length 20
start offset 636.174
freq offset 0.000009
cores 4
skipped 635.688979 seconds to start
initial reference phase 67.8
---------------------------------------------
.......
---------------------------------------------
found 73
list rank 1
reference phase   30   30    0    0
carrier S/N 9.70 dB in 30.6 uHz, -35.44 dB in 1Hz, -69.42 dB in 2.5kHz
carrier Es/N0 -17.66 dB
carrier Eb/N0 -0.87 dB
info bit period 2863.16 seconds
symbol error rate 238/544 = 43.750 %
Es/N0 from symbol errors -19.0 dB
Eb/N0 from symbol errors -2.2 dB
Shannon capacity 1.5 bits/hour
Shannon efficiency 85.4 %
symbols file C:\EbNaut\ebnaut07_MAY_0037_6470-1pps-symbols.csv
elapsed 11 seconds

73!  (?)
:)
rn3aus/Alex
--------------070707050900010506000307--