Decoded the 20170309 transmission in Warsaw with Eb/N0 7.4dB
found rank 0 ber 2.7307e-01 Eb/N0 7.4 M -4.779396057e+00 [GGGG DDD] ps [
0 0 0 0 0]
carrier phase: -1.4
carrier Eb/N0: 8.2
carrier S/N: 24.80 dB in 24.8 uHz
elapsed 179
VY 73
Jacek / SQ5BPF
On Fri, 10 Mar 2017, DK7FC wrote:
Date: Fri, 10 Mar 2017 01:42:39 +0100
From: DK7FC <[email protected]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: VLF: Tonite...
As already observed and decoded, another message is transmitted right now, same
parameters as below, started 18 UTC.
This should decode in Moscow :-)
73, Stefan
Am 07.03.2017 23:37, schrieb DK7FC:
VLF,
I'm trying another 8 character message, just to get a clear decode from
Alex. Of course all reports are welcome, as usual
:-)
The message has started to late again but not as late as the last one, so
maybe there will be a clear decode. On the other
side there is more QRN now. Some day we will need a tool for stacking/
combining multiple wav files under windows! It would
make things easy on that path.
Now:
f = 8270.100000 Hz
Start time: Tuesday 07.Mar.2017 22:20:00.3
Symbol period: 30 s
Characters: 8
CRC bits: 16
Coding 16K21A
Duration: 11h, 12m, 0s
Antenna current: 700 mA
Based on the last carrier S/N of Alex' last decode this could be the
result:
http://abelian.org/ebnaut/calc.php?sndb=15.87&snbws=0.000035&snmps=&code=16K21&sp=30&crc=16&nc=8&submit=Calculate
But some hours will fall into daylight, so it will be quite close to the
limit again! :-)
73, Stefan
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