Re: VLF: Trying 12 chars on 5170.1 Hz

[DK7FC <selberdenken@posteo.de>]

Hi Paul,

Thanks.
Indeed, i checked the file from the tree that was active during that 
time. In this transmission (starting on the 14th), there is a delay of 1 
symbol length, i.e. 30 seconds.
Very strange!
So thanks for the note.

73, Stefan

Am 16.01.2018 15:52, schrieb Paul Nicholson:
> > 17 transmissions completed.
>
> Did something go wrong with the 17th (14/15) transmission?
>
> Little or no signal from it receive at any site.  Even Bielefeld
> correlated at Eb/N0 -15dB, some 20dB worse that average?
>
> Bielefeld (303.8 km DL4YHF)
> ---------------------------
>
>  29/30 Eb/N0  +8.6 dB, S/N -20.4 dB/1Hz, phase -53.5 *Decoded*
>  30/31 Eb/N0  +8.3 dB, S/N -20.6 dB/1Hz, phase -52.1 *Decoded*
>  31/01 Eb/N0  +8.1 dB, S/N -20.8 dB/1Hz, phase -56.3 *Decoded*
>  01/02 Eb/N0  +8.4 dB, S/N -20.6 dB/1Hz, phase -47.9 *Decoded*
>  02/03 Eb/N0  +4.0 dB, S/N -24.9 dB/1Hz, phase -38.1 *Decoded*
>  03/04 Eb/N0  +5.6 dB, S/N -23.4 dB/1Hz, phase -46.1 *Decoded*
>  04/05 Eb/N0  +8.8 dB, S/N -20.1 dB/1Hz, phase -47.0 *Decoded*
>  05/06 Eb/N0 +10.4 dB, S/N -18.5 dB/1Hz, phase -41.1 *Decoded*
>  06/07 Eb/N0 +11.5 dB, S/N -17.5 dB/1Hz, phase -43.2 *Decoded*
>  07/08 Eb/N0 +11.0 dB, S/N -18.0 dB/1Hz, phase -37.4 *Decoded*
>  08/09 Eb/N0  +8.6 dB, S/N -20.4 dB/1Hz, phase -49.1 *Decoded*
>  09/10 Eb/N0  +8.4 dB, S/N -20.5 dB/1Hz, phase -50.2 *Decoded*
>  10/11 Eb/N0  +9.0 dB, S/N -20.0 dB/1Hz, phase -51.4 *Decoded*
>  11/12 Eb/N0  +8.3 dB, S/N -20.6 dB/1Hz, phase -41.4 *Decoded*
>  12/13 Eb/N0  +8.9 dB, S/N -20.0 dB/1Hz, phase -40.0 *Decoded*
>  13/14 Eb/N0 +10.0 dB, S/N -19.0 dB/1Hz, phase -50.7 *Decoded*
>
>  14/15 Eb/N0 -15.0 dB, S/N -43.9 dB/1Hz, phase -63.4
>
> --
> Paul Nicholson
> --