Re: VLF: Night-transmission on 8270.1 Hz

[DK7FC <selberdenken@posteo.de>]

Thanks Paul ,

Amazing, just amazing! With that signal level i could transfer my 
callsign over to you within 27 seconds.
73, Stefan

Am 20.01.2019 23:05, schrieb Paul Nicholson:
> Stefan wrote:
>
> > How many character could have been carried in these 130 minutes
> > if an EbNaut message would have been transmitted?
>
> Using:
>
>  Coding: 16K19A
>  Symbols: 0.06 seconds
>  CRC: 7 bits
>  Chars: 1350
>
> The 7800 seconds of carrier decodes to 1350 *
> with S/N 39.74dB in 128.2 uHz, Eb/N0 +0.9dB, rank 0.
>
>  http://abelian.org/vlf/tmp/190119c.gif
>
> Needs 32 Gbyte RAM to decode, and an update to ebnaut to
> increase some buffer and array lengths.
>
> --
> Paul Nicholson
> --