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

from [Alex K] [Permanent Link][Original]
To: [email protected]
Subject: Re: 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 19:09:45 +0300
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=udwWKJD1+7/di+IgvoMv0lq6qkHv8Ev7qpcTtsEj288=; b=treLS3OZCmpfPLhqM/ayyQzJitAEeixp7tUPzpdJVRrqd2UkgzJFznHEIBPUxZehjy vG0/fa+ep0hSRtu8ZYcRiRuotAiNgmxt6+GXE2tcLdCPh4iss4a/nwH8Om/T1bb6QTSO afIDfNLfth1A7/3nYjf8dy0y5thYL/T95dqiyE0gHmtvxY6xOSl/tbUocb5Ha8igcJtZ E/dx2wACs74iIZLkCiMeo5Vh8sfFgECCVFwWXEl/fgb7Wr5cHZr1um7CzfiY5VgjmGrQ IxZLWck5urV9qEhGII9mShwjvB0fUrfDYwtHHZkYH8xWleKAYeOIRbhTQIBpCd1hbLsL L0Dg==
In-reply-to: <[email protected]>
References: <CAGZ2MyYDKx5B6HSg1Z7XeoWZigvDgVS8XLT82A1aXW6ogFxFqg@mail.gmail.com> <[email protected]> <[email protected]> <[email protected]> <[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

2017-02-16 16:36 GMT+03:00 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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