LF: Re[2]: VLF: Tonite...

[rn3aus@gmail.com]

Hello Stefan, VLF
1) I visited my vlf-grabber and took ebnaut-files from 02 to 05 Mar 2017
Now I have a decode:
----------------
found HI
list rank 0
reference phase -150 -150 -150 -150
carrier RMS 6.963e-005 noise RMS 1.120e-005
carrier S/N 15.87 dB in 34.7 uHz
carrier Es/N0 -13.95 dB
carrier Eb/N0 5.30 dB
info bit period 2526.32 seconds
symbol error rate 378/960 = 39.375 %
Es/N0 from symbol errors -14.3 dB
Eb/N0 from symbol errors 5.0 dB
Shannon capacity 6.8 bits/hour
Shannon efficiency 20.9 %
------------
It is interesting that the best result (rank 0 immediately) was achieved with little freq offset = 0.000005 Hz

Also unfortunately I have no decode of second transmission (8 char)
file is here: http://rn3aus.narod.ru/04Mar17-ebnaut-8ch.zip 

73 de Alex/rn3aus

Понедельник, 6 марта 2017, 0:22 +03:00 от DK7FC <selberdenken@posteo.de>:

...transmission aborted due to strong rain :-(
73

Am 05.03.2017 16:48, schrieb DK7FC:

Hi Eddie, Markus,

Thanks for the decodes, your results are very good.
Hopefully the message can be decoded by Alex too. Rain caused the aborting of the early transmission.
Tonite i want to try 10 ch again.

f = 8270.100000 Hz
Start time: Sunday 05.Mar.2017   18:00:00
Symbol period: 27 s
Characters: 10
CRC bits: 15
Coding 16K21A
Duration: 11h, 24m, 0s
Antenna current: 700 mA

Then, during the week, i would like to try to send my full callsign to Eddie in DFCW-6000. It could work, he can see me day and night it seems :-)

A beacon with 5ch, 3sec and hourly repetition would be interesting too....

73, Stefan

Am 05.03.2017 16:02, schrieb g3zjo:

On 04/03/2017 23:37, DK7FC wrote:

...restartet 23:30 UTC, will be a day/night transmission...

Good copy in Northampton UK IO92ng16, last two figures give me an extra Km. Full decode sent to TX HQ for confirmation.

---------------------------------------------
found XXX XXXX
list rank 0
reference phase    0    0    0    0
carrier RMS 4.638e-005 noise RMS 5.016e-006
carrier S/N 19.32 dB in 24.8 uHz
carrier Es/N0 -11.97 dB
carrier Eb/N0 2.73 dB
info bit period 884.21 seconds
symbol error rate 492/1344 = 36.607 %
Es/N0 from symbol errors -12.3 dB
Eb/N0 from symbol errors 2.4 dB
Shannon capacity 10.7 bits/hour
Shannon efficiency 38.1 %
elapsed 9 seconds

73 Eddie G3ZJO

DK7FC-02Mar17-HI-foffset.png
Description: PNG image