Re: VLF: 8270: now 8269.990Hz

[Markus Vester <markusvester@aol.com>]

Hi Uwe,

 

unfortunately static level was high, preventing your carriers before and after the PSK from showing up in my spectrogram. The EbNaut decoder produced "GL" at rank 13429 and -1 dB Eb/N0, but I have no clue whether this message is really correct.

 

Best 73,

Markus

 

 

-----Ursprüngliche Mitteilung-----
Von: Markus Vester <markusvester@aol.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 31 Mrz 2016 9:23 pm
Betreff: Re: VLF: 8270: now 8269.990Hz

Thanks Uwe. The late evening may not be ideal in terms of QRN background but let's try anyway. I have pushed out the antenna again (half height due to wind), and restarted the VLF grabbers with EbNaut recording since19 UT. 8270.000 is still within EbNaut's bandwidth (+-1/40 Hz) of your QRG so I hope that my new VLF neighbour Roland won't fire up tonight.

All the best,

Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: uwe-jannsen <uwe-jannsen@kabelmail.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 31 Mrz 2016 6:38 pm
Betreff: AW: VLF: 8270: now 8269.990Hz

the carrier is on the air.
there will be a special message for Markus:

start 22:00:00

coding 8K19A

CRC 16

period 40

length 2

duration 04:05:20:00

Have fun
Uwe/dj8wx

PS. rain would stop the transmission automatically.


 

Von: Markus Vester <markusvester@aol.com>
Gesendet: 24.03.2016 00:00
An: <rsgb_lf_group@blacksheep.org>
Betreff: VLF: 8270 March 22

 

 

Yesterday afternoon the noise was fairly moderate, and around 18 UT I caught a good dash in 63 uHz, presumably from DJ8WX. I then attempted simulated EbNaut decodes on the carrier, using 1 and 2 character settings and 40 s symbols. Both resulted in valid asterisk messages, with some more margin to spare for the single character. So far I have never decoded a real message on VLF, and I'd be keen to try...

 

Best 73,

Markus (DF6NM)

 

 

 

 

 

    

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