Hi Alex,
thanks for the results. Pity, it looks like the last improvement rather
lowered the sensitivity. We need to continue more systematic. More
details in a private mail.
At least one decode, to get some feedback.
I got no further decodes from the txt files. In attachment, a wav file
from the 8 char message. Maybe Paul can analyse it further than we can.
So the best result so far is still 7 characters (DREAMER).
73, Stefan
Am 27.02.2017 17:14, schrieb [email protected]:
Hello
Stefan, Markus, Paul, VLF,
my results are not very good: only CIAO was decoded, other transmission
not decoded :(
---------------------------------------------
found CIAO
list rank 7
reference phase -30 -30 -30 -30
carrier RMS 2.670e-005 noise RMS
4.665e-006
carrier S/N 15.16 dB in 32.6 uHz
carrier Es/N0 -14.95 dB
carrier Eb/N0 1.58 dB
info bit period 1347.37 seconds
symbol error rate 411/1024 = 40.137 %
Es/N0 from symbol errors -15.0 dB
Eb/N0 from symbol errors 1.5 dB
Shannon capacity 5.5 bits/hour
Shannon efficiency 49.0 %
symbols file
C:\EbNaut\ebnaut26_FEB_0221_8270-1pps-symbols.csv
elapsed 41 seconds
Also I "decode" carrier after 25feb transmission: http://rn3aus.narod.ru/DK7FC-carrier-26feb17-0435z.png
And some ebnaut-files for reprocessing (if I probably have some
mistakes in my settings for decoder):
http://rn3aus.narod.ru/ebnaut-22-26feb2017.zip
I make little improvements (as I think) on my position - now only one
rx connected to antenna system (not two)...
73!
Понедельник, 27 февраля 2017, 17:01 +03:00 от DK7FC
<[email protected]>:
Thanks Paul and Markus
for the decode.
Everything seems to be fine! :-)
Soon Alex will be there with his results, i'm curious!
73, Stefan
Am 27.02.2017 14:53, schrieb Paul Nicholson:
>
> No problem with the decode here, Eb/N0 +7.8dB.
> The message has md5 hash = df2ba39b3842b67c23a71ebdf466b6cf
>
> echo -n 'XXXXXXXXXXXX' | md5sum
>
> > i remember there could have been an unintentional time offset
>
> Timing looks ok, best decode at offset +0.3 seconds.
>
> --
> Paul Nicholson
> --
>
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8chmessage.wav
Description: Wave audio
|
