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LF: Re[2]: LF: Re[2]: LF: Re: DK7FC EbNaut message on 8270.1 Hz decoded

To: [email protected]
Subject: LF: Re[2]: LF: Re[2]: LF: Re: DK7FC EbNaut message on 8270.1 Hz decoded nr Moscow by RN3AUS
From: Alex K <[email protected]>
Date: Thu, 16 Feb 2017 19:02:33 +0300
Authentication-results: f389.i.mail.ru; auth=pass smtp.auth=[email protected] smtp.mailfrom=[email protected]
Cc: DK7FC <[email protected]>
Dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.ru; s=mail2; h=References:In-Reply-To:Content-Type:Message-ID:Reply-To:Date:MIME-Version:Subject:Cc:To:From; bh=fIGm/zcUk0sW68UNiNSVshOngU3YWN4j6U+VBQrFI+Y=; b=G0ZTYVFe8RMyY8frjTnx82yw1Hj9pYTKopxWL1bd55pFAKyJn8Y8tIreBpgBTiYg0Cg7zdHx8cFsk/wEfwvYtvjZjJBgvjOZzFb+A4sfQUHQulLLW4b+0hrFNbUTd8tW71H8GQ+EdUTmsbFGPkEpPl8SeeGJZJ+aw6D2sP8gv1w=;
In-reply-to: <[email protected]>
References: <[email protected]om> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Hello VLF, Stefan!
Easy and fast decode! Wow!
I make some improvements by switching off MIC gain. Now sound input is not overloaded at night time...
Grabber will run to Monday or longer, I will visit it for results at Monday.
73!
ebnaut-rx V0.5
input file C:\EbNaut\VLF_EBNAUT\EbNaut\ebnaut15_FEB_2251_8270-1pps.wav
sample rate 0.342935 per second
rx frequency 8270.1
file start time 2017-02-15 16:13:47.290
polynomial 8K19A
crc size 16
number of chars 5
block size 46
symbol period 60.000
number of symbols 512
list length 20000
start offset 14184.674
freq offset 0.000000
cores 1
skipped 14183.445843 seconds to start
initial reference phase 5.3
---------------------------------------------
found DL-RU
list rank 3151
reference phase  180  180  180  180
carrier RMS 2.988e-005 noise RMS 5.866e-006
carrier S/N 14.14 dB in 32.6 uHz
carrier Es/N0 -12.95 dB
carrier Eb/N0 -0.41 dB
info bit period 1077.89 seconds
symbol error rate 208/512 = 40.625 %
Es/N0 from symbol errors -15.5 dB
Eb/N0 from symbol errors -3.0 dB
Shannon capacity 4.3 bits/hour
Shannon efficiency 78.1 %
symbols file C:\EbNaut\VLF_EBNAUT\EbNaut\ebnaut15_FEB_2251_8270-1pps-symbols.csv
elapsed 8 seconds
---------------------------------------------
found DL-RU
list rank 363
reference phase  180  180 -150 -150
carrier RMS 3.088e-005 noise RMS 5.866e-006
carrier S/N 14.43 dB in 32.6 uHz
carrier Es/N0 -12.67 dB
carrier Eb/N0 -0.12 dB
info bit period 1077.89 seconds
symbol error rate 202/512 = 39.453 %
Es/N0 from symbol errors -14.4 dB
Eb/N0 from symbol errors -1.9 dB
Shannon capacity 4.6 bits/hour
Shannon efficiency 73.2 %
symbols file C:\EbNaut\VLF_EBNAUT\EbNaut\ebnaut15_FEB_2251_8270-1pps-symbols.csv
elapsed 97 seconds



Четверг, 16 февраля 2017, 16:36 +03:00 от Paul Nicholson <[email protected]>:


Stefan wrote:

 > f = 8270.100000 Hz
 > Start time: 15.Feb.2017 20:10:00 UTC
 > Symbol period: 60 s
 > Characters: 5
 > CRC bits: 16
 > Coding 8K19A

A good transmission this time. Decoded here Eb/N0 = +7.6 dB.

Just for fun I decoded it on the RPi model 2, it took 20
seconds to decode.

Now over to Alex - good luck!

--
Paul Nicholson
--


Attachment: DK7FC-15feb2017-2010z-1pps-ebnaut.png
Description: PNG image

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