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: : mailn 1480; 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 v2AHs8pb024386 for ; Fri, 10 Mar 2017 18:54:09 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cmOgE-0002WL-KT for rs_out_1@blacksheep.org; Fri, 10 Mar 2017 17:50:18 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cmOgD-0002WC-N2 for rsgb_lf_group@blacksheep.org; Fri, 10 Mar 2017 17:50:17 +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 4.89) (envelope-from ) id 1cmOgA-0004ns-94 for rsgb_lf_group@blacksheep.org; Fri, 10 Mar 2017 17:50:16 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id ACA3A20850 for ; Fri, 10 Mar 2017 18:50:13 +0100 (CET) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3vfvtF2T5Yz1095 for ; Fri, 10 Mar 2017 18:50:13 +0100 (CET) Message-ID: <58C2E755.9060907@posteo.de> Date: Fri, 10 Mar 2017 18:50:13 +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: <15a98cc579c-d3b-de27@webprd-a58.mail.aol.com> <58C1F67F.1060005@posteo.de> <7a9d8b15-963a-b48a-5700-15199ccbfc25@abelian.org> <1489159307.650761715@f353.i.mail.ru> In-Reply-To: <1489159307.650761715@f353.i.mail.ru> X-Scan-Signature: 571129b349252c35b2bc09d7a1c6d0f3 Subject: Re: VLF: Tonite... Content-Type: multipart/alternative; boundary="------------040803000600090002070706" 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: 10832 This is a multi-part message in MIME format. --------------040803000600090002070706 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi Alex, Yes, that's it! My congrats to you, as written in the message ;-) 8 characters on the 36 km band from Germany to Russia, with a fixed antenna, that's a thing we were dreaming of :-) Wow and we are quite close to the limit again! Carrier S/N 17.39 dB in 24.8 uHz, based on that value we could also try 10 characters, http://abelian.org/ebnaut/calc.php?sndb=17.39&snbws=0.000025&snmps=&code=16K21&sp=27&crc=15&nc=10&submit=Calculate Maybe a job for the next weekend :-) 73, Stefan Am 10.03.2017 16:21, schrieb Alex K: > Hello Stefan, VLF! > Yes! > Optimization of my receiving system yielded positive takes. Both 8-ch > transmissions were successfully and quite easily decoded. > It is interesting that for transmission of March 07 of 22:30 best > decode achiewed with small freq offset. Without this offset was also > successful decode but with smaller Eb/N0. > On reception only E-probe was used. I found that this setup, without > Loop-ant, gives the best SNR in my environment. > Grabber is running and my next visit will at Monday. > Congrats to Stefan on his 8-char successful transmissions! > > As usualy files are here: > http://rn3aus.narod.ru/ebnaut-vlf-7-9mar2017.zip > > ebnaut-rx V0.5 > input file C:\EbNaut\ebnaut08_MAR_0448_8270-1pps.wav > sample rate 0.342935 per second > rx frequency 8270.1 > file start time 2017-03-07 22:10:11.190 > polynomial 16K21A > crc size 16 > number of chars 8 > block size 64 > symbol period 30.000 > number of symbols 1344 > list length 200000 > start offset 600.774 > freq offset 0.000009 > cores 2 > skipped 600.696925 seconds to start > initial reference phase 19.0 > --------------------------------------------- > found *CONGRATS* > list rank 12 > reference phase 30 30 30 30 > carrier RMS 1.213e-004 noise RMS 1.783e-005 > carrier S/N 16.65 dB in 24.8 uHz > carrier Es/N0 -14.63 dB > carrier Eb/N0 0.06 dB > info bit period 884.21 seconds > symbol error rate 532/1344 = 39.583 % > Es/N0 from symbol errors -14.5 dB > Eb/N0 from symbol errors 0.2 dB > Shannon capacity 5.9 bits/hour > Shannon efficiency 69.5 % > symbols file C:\EbNaut\ebnaut08_MAR_0448_8270-1pps-symbols.csv > elapsed 20 seconds > > ebnaut-rx V0.5 > input file C:\EbNaut\ebnaut09_MAR_2248_8270-1pps.wav > sample rate 0.342935 per second > rx frequency 8270.1 > file start time 2017-03-09 16:10:11.190 > polynomial 16K21A > crc size 16 > number of chars 8 > block size 64 > symbol period 30.000 > number of symbols 1344 > list length 200000 > start offset 6600.774 > freq offset 0.000000 > cores 1 > skipped 6601.834167 seconds to start > initial reference phase 33.2 > --------------------------------------------- > found *GOOD DAY* > list rank 0 > reference phase 0 0 0 0 > carrier RMS 1.397e-004 noise RMS 1.888e-005 > carrier S/N 17.39 dB in 24.8 uHz > carrier Es/N0 -13.90 dB > carrier Eb/N0 0.80 dB > info bit period 884.21 seconds > symbol error rate 546/1344 = 40.625 % > Es/N0 from symbol errors -15.5 dB > Eb/N0 from symbol errors -0.8 dB > Shannon capacity 6.9 bits/hour > Shannon efficiency 58.9 % > symbols file C:\EbNaut\ebnaut09_MAR_2248_8270-1pps-symbols.csv > elapsed 11 seconds > > > > Пятница, 10 марта 2017, 16:59 +03:00 от Paul Nicholson > : > > > Stefan wrote: > > > same parameters as below, started 18 UTC. > > Another solid transmission: > > carrier Eb/N0: 10.6 dB > carrier S/N: 27.20 dB in 24.8 uHz > > Peaking at offset +0.37 seconds. > > Eddie wrote: > > > carrier Eb/N0 5.30 dB > > carrier S/N 21.89 dB in 24.8 uHz > > Here in the E-field > > carrier Eb/N0: 3.9 dB > carrier S/N: 20.47 dB in 24.8 uHz > > -- > Paul Nicholson > -- > > > --------------040803000600090002070706 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Alex,

Yes, that's it! My congrats to you, as written in the message ;-)
8 characters on the 36 km band from Germany to Russia, with a fixed antenna, that's a thing we were dreaming of :-)

Wow and we are quite close to the limit again!
Carrier S/N 17.39 dB in 24.8 uHz, based on that value we could also try 10 characters, http://abelian.org/ebnaut/calc.php?sndb=17.39&snbws=0.000025&snmps=&code=16K21&sp=27&crc=15&nc=10&submit=Calculate
Maybe a job for the next weekend :-)

73, Stefan


Am 10.03.2017 16:21, schrieb Alex K:
Hello Stefan, VLF!
Yes!
Optimization of my receiving system yielded positive takes. Both 8-ch transmissions were successfully and quite easily decoded.
It is interesting that for transmission of March 07 of 22:30 best decode achiewed with small freq offset. Without this offset  was also successful decode but with smaller Eb/N0.
On reception only E-probe was used. I found that this setup, without Loop-ant, gives the best SNR in my environment.
Grabber is running and my next visit will at Monday.
Congrats to Stefan on his 8-char successful transmissions!

As usualy files are here:
http://rn3aus.narod.ru/ebnaut-vlf-7-9mar2017.zip 

ebnaut-rx V0.5
input file C:\EbNaut\ebnaut08_MAR_0448_8270-1pps.wav
sample rate 0.342935 per second
rx frequency 8270.1
file start time 2017-03-07 22:10:11.190
polynomial 16K21A
crc size 16
number of chars 8
block size 64
symbol period 30.000
number of symbols 1344
list length 200000
start offset 600.774
freq offset 0.000009
cores 2
skipped 600.696925 seconds to start
initial reference phase 19.0
---------------------------------------------
found CONGRATS
list rank 12
reference phase   30   30   30   30
carrier RMS 1.213e-004 noise RMS 1.783e-005
carrier S/N 16.65 dB in 24.8 uHz
carrier Es/N0 -14.63 dB
carrier Eb/N0 0.06 dB
info bit period 884.21 seconds
symbol error rate 532/1344 = 39.583 %
Es/N0 from symbol errors -14.5 dB
Eb/N0 from symbol errors 0.2 dB
Shannon capacity 5.9 bits/hour
Shannon efficiency 69.5 %
symbols file C:\EbNaut\ebnaut08_MAR_0448_8270-1pps-symbols.csv
elapsed 20 seconds

ebnaut-rx V0.5
input file C:\EbNaut\ebnaut09_MAR_2248_8270-1pps.wav
sample rate 0.342935 per second
rx frequency 8270.1
file start time 2017-03-09 16:10:11.190
polynomial 16K21A
crc size 16
number of chars 8
block size 64
symbol period 30.000
number of symbols 1344
list length 200000
start offset 6600.774
freq offset 0.000000
cores 1
skipped 6601.834167 seconds to start
initial reference phase 33.2
---------------------------------------------
found GOOD DAY
list rank 0
reference phase    0    0    0    0
carrier RMS 1.397e-004 noise RMS 1.888e-005
carrier S/N 17.39 dB in 24.8 uHz
carrier Es/N0 -13.90 dB
carrier Eb/N0 0.80 dB
info bit period 884.21 seconds
symbol error rate 546/1344 = 40.625 %
Es/N0 from symbol errors -15.5 dB
Eb/N0 from symbol errors -0.8 dB
Shannon capacity 6.9 bits/hour
Shannon efficiency 58.9 %
symbols file C:\EbNaut\ebnaut09_MAR_2248_8270-1pps-symbols.csv
elapsed 11 seconds



Пятница, 10 марта 2017, 16:59 +03:00 от Paul Nicholson <vlf0403@abelian.org>:


Stefan wrote:

 > same parameters as below, started 18 UTC.

Another solid transmission:

  carrier Eb/N0: 10.6 dB
  carrier S/N: 27.20 dB in 24.8 uHz

Peaking at offset +0.37 seconds.

Eddie wrote:

 > carrier Eb/N0 5.30 dB
 > carrier S/N 21.89 dB in 24.8 uHz

Here in the E-field

  carrier Eb/N0: 3.9 dB
  carrier S/N: 20.47 dB in 24.8 uHz

--
Paul Nicholson
--



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