Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz

[DK7FC <selberdenken@posteo.de>]

Hallo Paul,

Many thanks for the schönes Weihnachtsgeschenk Paul. I think it is a 
Geschenk for both of us. We are a good team i find.
I guess that's the longest message (by amateurs) on VLF so far. When 
starting on 46 km in summer, i didn't expect that we will manage such 
good results there, so i'm quite satisfied.
There is still some confusion about unstable colours (-> phase) on my 
local monitors, although things should works fine. There is no frequency 
offset or drift, so the SpecLabs sample rate correction must work. 
However the colours looks like a nice rainbow :-)
On the other side i can decode my EbNaut messages with 0 errors. 
Strange. That was the reason why i stopped the DEC.24th transmission. 
But maybe this has not been necessary. Anyway, now we are here :-)
It is now time for me to leave the 46 km band (again) and i will move to 
the 58 km band. I will start a new thread... This thread has started on 
May, 3th, 2016 :-)
73, Stefan



Am 25.12.2016 17:35, schrieb Paul Nicholson:
> Ich habe ein kleines Weihnachtsgeschenk für Stefan!
>
> The 75 character message received at 6470 Hz:
>
>  "HABE DEN MUT DICH DEINES EIGENEN VERSTANDES ZU BEDIENEN
>   - IMMANUEL KANT -"
>
> by coherent summing of 7 daily transmissions.
>
> Eb/N0 = -0.2 dB, BER 32.44%, constant reference phase.
>
> List decoding rank: 1987053.
>
> S/N: 26.14 dB in 36.9 uHz, -52.2dB in 2.5kHz.
>
>  Day         Phase  Eb/N0
>  2016-12-18  41.2    -5.5
>  2016-12-19  47.2   -10.1
>  2016-12-20  38.0    -8.2
>  2016-12-21  40.5   -10.1
>  2016-12-22  48.0   -11.0
>  2016-12-23  50.9    -8.8
>  2016-12-24  42.9   -12.2 (not used, skipped)
>  2016-12-25  46.6    -7.1
>
> --
> Paul Nicholson
> --