Re: VLF: Trying 12 chars on 5170.1 Hz

[Paul Nicholson <vlf0403@abelian.org>]

Stefan wrote:

> f = 5170.1000 Hz
> Start time: 29.Dec.2017  15:00:00 UTC
> Symbol period: 30 s
> Characters: 12
> CRC bits: 20
> Coding 16K21A
> Duration: 14:56 [hh:mm]

This transmission goes out well:

Todmorden (881.2 km)
--------------------

 29/30 Eb/N0 +2.8 dB, S/N -26.2 dB/1Hz, phase 46.1 *Decoded*
 30/31 Eb/N0 +4.1 dB, S/N -24.9 dB/1Hz, phase 44.2 *Decoded*

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*

Warsaw (919.3 km SQ5BPF)
------------------------

 29/30 Eb/N0  -5.4 dB, S/N -34.4 dB/1Hz, phase -20.3;
 30/31 Eb/N0 -17.2 dB, S/N -46.2 dB/1Hz;

Cumiana (504.6 km IK1QFK)
-------------------------

 29/30 Eb/N0 -5.4 dB, S/N -34.3 dB/1Hz, phase  176.7;
 30/31 Eb/N0 -1.3 dB, S/N -30.3 dB/1Hz, phase -176.2;

 Stacked: Eb/N0 -0.1 dB *Decoded*
 Record message length Germany to Italy on 58km band.

--
Paul Nicholson
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