thanks, Stefan=2E

Normal 0 21 MicrosoftInternetExplorer4 the carrier is on the air=2E
the message:

start 2016-04-13 07:00:00
coding 8K19A
CRC 16
peri= od 30
length 5
duration 04:16:00:00

Have fun a= gn
Uwe/dj8wx

Von: DK7FC <selberdenken@posteo=2Ede>
Gesendet: 11=2E04=2E2016 23:42An: &l= t;rsgb_lf_group@blacksheep=2Eorg>
Betreff: Re: VLF: 8269=2E990Hz

&n= bsp;
Uwe, your transmissions a= re very interesting=2E I'm looking forward to receive the 5 char messag= e at 30s=2E We can try 25s symbols later :-)

73, Stefan

A= m 11=2E04=2E2016 19:05, schrieb uwe-jannse= n@kabelmail=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 actually surprised about the successful decode because= the nighttime carrier was well visible in Heidelberg but not at all in= my spectrogram=2E

Anyway both our decodes were close to the limit, so = for the next step I would suggest to try 5 char but stay with 30 s= ec symbols=2E Due to the FEC and CRC overhead, going from 3&n= bsp;to 5 characters (1=2E667 x payload) will increase the total ti= me only by a factor of 1=2E23 so we already loose = 1=2E32 dB sensitivity=2E Shortening the symbols from 30 to 20 seconds w= ould cost another 1=2E76 dB=2E

Thanks for the test!

=
All the best,
Markus (DF= 6NM)
&= nbsp;
=
-----Urspr=C3=BCngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo=2Ede>
An: rsgb_lf_group <rsgb_lf_group@blacksheep=2Eorg>
Ve= rschickt: 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! Se= e attachment=2E
If Markus can decode and no other station wants to t= ry, maybe we can try 20s symbols and 5 characters, your callsign for ex= ample :-)

As you probably saw, i saw your carrier on 8269=2E99 H= z in my 6000 window in the city but not in the forest=2E Either it is a= propagation phenomenon that i don't understand yet or there is still s= omething wrong with the drift calibration=2E I will today go on the tre= e again to re-configure the GPS-module and see if this makes a differen= ce=2E=2E=2E

73, Stefan

Am 10=2E04=2E2016 22:30, schrieb <= a moz-do-not-send=3D"true" class=3D"moz-txt-link-abbreviated" target=3D= "_blank" href=3D"mailto:uwe-jannsen@kabelmail=2Ede:">uwe-jannsen@kabelm= ail=2Ede:
the carrier is on the air=2E
the message:
start 2016-04-11 0= 7:00:00
coding 8K19A
CRC 16
period 30
length 3
duration 03:28:00:00
Have funUwe/dj8wx