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_FONT_SIZE_LARGE,HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham 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 v1FKRSqS001861 for ; Wed, 15 Feb 2017 21:27:29 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ce66q-0000uQ-IL for rs_out_1@blacksheep.org; Wed, 15 Feb 2017 20:23:28 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ce66q-0000uH-2N for rsgb_lf_group@blacksheep.org; Wed, 15 Feb 2017 20:23:28 +0000 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1ce66n-0002zO-E5 for rsgb_lf_group@blacksheep.org; Wed, 15 Feb 2017 20:23:26 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 89E5A20BC3 for ; Wed, 15 Feb 2017 21:23:24 +0100 (CET) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3vNrMc26fWz106Y for ; Wed, 15 Feb 2017 21:23:24 +0100 (CET) Message-ID: <58A4B8BC.1000700@posteo.de> Date: Wed, 15 Feb 2017 21:23:24 +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 References: <58A2DCAE.90605@posteo.de> <58A42DDF.4040602@posteo.de> <1487175699.649112536@f356.i.mail.ru> In-Reply-To: <1487175699.649112536@f356.i.mail.ru> X-Scan-Signature: fbdd513523001863775249cfaf215eac Subject: Re: LF: Re[2]: LF: Re: DK7FC EbNaut message on 8270.1 Hz decoded nr Moscow by RN3AUS Content-Type: multipart/alternative; boundary="------------090504080106030102020700" 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: A X-Keywords: X-UID: 10604 This is a multi-part message in MIME format. --------------090504080106030102020700 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hello Alex, VLF, Wow, Eb/N0 = 6.5 dB and that's a big signal! Very well and thanks for the detection and doing the efforts on your side. We now see that a call sign or longer transmission is in reach!! :-) Forget the last night transmission. Something was wrong, the results seem to be rubbish, even here on the local recording from the tree... Am 15.02.2017 17:21, schrieb rn3aus@gmail.com: > Hello Stefan, VLF, > 1) excellent decode of 13 feb 20:40 UTC transmission with rank=0 !! > (ebnaut txt file taked from GBZ-synchronized PC) Oh, you were lucky, a single sample loss would most likely have lead to no decode. Was there a decode on from the second PC running at PPS+NMEA? > *found 73 > list rank 0 > reference phase 180 180 180 180* > carrier RMS 7.896e-004 noise RMS 1.034e-004 > *carrier S/N 17.66 dB in 32.6 uHz* > carrier Es/N0 -12.45 dB > carrier Eb/N0 7.09 dB > info bit period 2694.74 seconds > symbol error rate 385/1024 = 37.598 % > Es/N0 from symbol errors -13.0 dB > *Eb/N0 from symbol errors 6.5 dB* > Shannon capacity 9.6 bits/hour > Shannon efficiency 13.9 % > symbols file C:\EbNaut\EbNaut14_FEB_0302_8270-symbols.csv > elapsed 37 seconds > --------------------------------------------- > found *73* > list *rank 0* > reference phase -150 180 180 150 > carrier RMS 7.922e-004 noise RMS 1.034e-004 > *carrier S/N 17.68 dB in 32.6 uHz* Based on 17.68 dB in 32.6 uHz it should be well realistic to try: *f = 8270.100000 Hz Start time: 15.Feb.2017 20:10:00 UTC Symbol period: 60 s Characters: 5 CRC bits: 16 Coding 8K19A Duration: 8h, 32m, 0s (same duration as the last messages) Antenna current: 700 mA* Good luck! 73, Stefan --------------090504080106030102020700 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello Alex, VLF,

Wow, Eb/N0 = 6.5 dB and  that's a big signal! Very well and thanks for the detection and doing the efforts on your side. We now see that a call sign or longer transmission is in reach!! :-)
Forget the last night transmission. Something was wrong, the results seem to be rubbish, even here on the local recording from the tree...

Am 15.02.2017 17:21, schrieb rn3aus@gmail.com:
Hello Stefan, VLF,
1) excellent decode of 13 feb 20:40 UTC transmission with rank=0 !! (ebnaut txt file taked from GBZ-synchronized PC)
Oh, you were lucky, a single sample loss would most likely have lead to no decode. Was there a decode on from the second PC running at PPS+NMEA?

found 73
list rank 0
reference phase  180  180  180  180
carrier RMS 7.896e-004 noise RMS 1.034e-004
carrier S/N 17.66 dB in 32.6 uHz
carrier Es/N0 -12.45 dB
carrier Eb/N0 7.09 dB
info bit period 2694.74 seconds
symbol error rate 385/1024 = 37.598 %
Es/N0 from symbol errors -13.0 dB
Eb/N0 from symbol errors 6.5 dB
Shannon capacity 9.6 bits/hour
Shannon efficiency 13.9 %
symbols file C:\EbNaut\EbNaut14_FEB_0302_8270-symbols.csv
elapsed 37 seconds
---------------------------------------------
found 73
list rank 0
reference phase -150  180  180  150
carrier RMS 7.922e-004 noise RMS 1.034e-004
carrier S/N 17.68 dB in 32.6 uHz

Based on 17.68 dB in 32.6 uHz it should be well realistic to try:

f = 8270.100000 Hz
Start time: 15.Feb.2017   20:10:00 UTC
Symbol period: 60 s
Characters: 5
CRC bits: 16
Coding 8K19A
Duration: 8h, 32m, 0s (same duration as the last messages)
Antenna current: 700 mA

Good luck!

73, Stefan
--------------090504080106030102020700--