I would have announced it, Stefan=2E

the WX forecast is not ok for a new try=2E
Paul, thanks for = the report=2E

Uwe

Von: DK7FC <selberdenken@posteo=2Ede>
Gesendet: 14=2E04=2E2016 11:47An: &l= t;rsgb_lf_group@blacksheep=2Eorg>
Betreff: Re: VLF: 8269=2E990Hz

&n= bsp;
Uwe,

The QRN was v= ery low this morning! Have you been on air? It would be good to observe= the QRN situation just like the WX situation before starting a transmi= ssion because both decides if a decode is possible :-)

73, Stefa= n

Am 12=2E04=2E2016 17:50, schrieb = uwe-jannsen@kabelmail=2Ede:
th= anks, Stefan=2E

the carrier is on the air=2E
the message:
start 2= 016-04-13 07:00:00
coding 8K19A
CRC 16
period 30
length 5
duration 04:16:= 00:00
Have fun agn
Uwe/dj8wx

Von: DK7FC <s= elberdenken@posteo=2Ede>
Gesendet: 11=2E04=2E2016 23:42
An: <rsgb_lf_group@blacksheep=2Eorg>Betr= eff: Re: VLF: 8269=2E990Hz

Uwe, your transmissions are very interesting=2E I'm looki= ng forward to receive the 5 char message at 30s=2E We can try 25s symbo= ls later :-)

73, Stefan

Am 11=2E04=2E2016 19:05, schrieb = uwe-jannsen@kabelm= ail=2Ede:
Thanks, Paul=2E
Congrats to Stefan and Markus=2E
The EbNaut Sender is prepared fo= r length 5, retaining period 30=2E
But: this afternoon the sky suddenly turned from blue to dark gre= y, so possibly the TX stays off=2E
We will see=2E
Uwe

Von: Markus Vester <markusvester@aol=2Ecom>
Gesendet: = 11=2E04=2E2016 18:26
An: <rsgb_lf_group@blacksheep=2Eorg>
Betreff: Re: VLF: = 8269=2E990Hz

Uwe,

=2E=2E=2E me too ;-) I was actua= lly surprised about the successful decode because the nighttime carrier= was well visible in Heidelberg but not at all in my spectrogram=2E

Anyway b= oth our decodes were close to the limit, so for the next step = ;I would suggest to try 5 char but stay with 30 sec symbols=2E Due to t= he FEC and CRC overhead, going from 3 to 5 characters (1= =2E667 x payload) will increase the total time only by a fact= or of 1=2E23 so we already loose 1=2E32 dB sensitivity=2E= Shortening the symbols from 30 to 20 seconds would cost another 1=2E76= dB=2E

Thanks for the test!

All the best,
Markus (DF6NM)

-----Urspr=C3=BCngliche M= itteilung-----
Von: DK7FC <selberdenken@posteo=2Ede>
An: rsgb_lf_group <rsgb_lf_group@blackshe= ep=2Eorg>
Verschickt: Mo, 11 Apr 2016 2:56 pm
Betreff: Re:= VLF: 8269=2E990Hz

Hello Uwe,

Thanks for the VLF transmission=2E No problem to = decode the message! See attachment=2E
If Markus can decode and no ot= her station wants to try, maybe we can try 20s symbols and 5 characters= , your callsign for example :-)

As you probably saw, i saw your = carrier on 8269=2E99 Hz in my 6000 window in the city but not in the fo= rest=2E Either it is a propagation phenomenon that i don't understand y= et or there is still something wrong with the drift calibration=2E I wi= ll today go on the tree again to re-configure the GPS-module and see if= this makes a difference=2E=2E=2E

73, Stefan

Am 10=2E04=2E= 2016 22:30, schrieb uwe-jannsen@kabelmail=2Ede:
the carrier is on the air=2E
the messag= e:
start 2016-04-11 <= span lang=3D"EN-GB">07:00:00
= coding 8K19A
CRC 16
period 30
length 3
durati= on 03:28:00:00
Have fun
Uwe/dj8wx

<= /blockquote>