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From: Paul Nicholson <vlf0403@abelian.org>
Message-ID: <5fb5fc87-fba9-cac3-d60b-83442d4ab8a2@abelian.org>
Date: Fri, 12 Jan 2018 08:11:17 +0000
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Subject: Re: VLF: Finally back on the 58 km band...
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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]

Fourteen transmissions.  Two decodes at Cumiana.
Problems with the uplink from Warsaw.

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*
  31/01 Eb/N0 +1.8 dB, S/N -27.1 dB/1Hz, phase 43.2 *Decoded*
  01/02 Eb/N0 +1.5 dB, S/N -27.5 dB/1Hz, phase 57.6 *Decoded*
  02/03 Eb/N0 -1.6 dB, S/N -30.6 dB/1Hz, phase 60.6;
  03/04 Eb/N0 -1.6 dB, S/N -30.6 dB/1Hz, phase 50.3;
  04/05 Eb/N0  0.0 dB, S/N -29.0 dB/1Hz, phase 61.3;
  05/06 Eb/N0 +1.4 dB, S/N -27.6 dB/1Hz, phase 58.3 *Decoded*
  06/07 Eb/N0 +0.1 dB, S/N -28.8 dB/1Hz, phase 56.2 *Decoded*
  07/08 Eb/N0 -2.1 dB, H-field only,     phase 64.1;
  08/09 Eb/N0 -3.1 dB, S/N -32.1 dB/1Hz, phase 45.0;
  09/10 Eb/N0 -0.2 dB, S/N -26.2 dB/1Hz, phase 34.9 *Decoded*
  10/11 Eb/N0 +1.5 dB, S/N -27.5 dB/1Hz, phase 39.4 *Decoded*
  11/12 Eb/N0 +1.1 dB, S/N -27.9 dB/1Hz, phase 37.8 *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*
  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*

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;
  31/01 Eb/N0  -7.8 dB, S/N -36.8 dB/1Hz, phase -44.2;
  01/02 Eb/N0  -6.1 dB, S/N -35.1 dB/1Hz, phase -36.1;
  02/03 Eb/N0  -8.2 dB, S/N -37.1 dB/1Hz, phase   2.9;
  03/04 Eb/N0 -10.2 dB, S/N -39.2 dB/1Hz, phase -33.1;
  04/05 Eb/N0  -8.1 dB, S/N -37.1 dB/1Hz, phase  -3.8;
  05/06 Eb/N0  -6.4 dB, S/N -35.4 dB/1Hz, phase -44.2;
  06/07 Eb/N0  -8.1 dB, S/N -37.1 dB/1Hz, phase -22.9;
  07/08 Eb/N0  -7.5 dB, S/N -36.5 dB/1Hz, phase -20.8;
  08/09 No data from rx site, uplink off;
  09/10 Eb/N0  -9.9 dB, S/N -38.8 dB/1Hz, phase -23.3;
  10/11 No data from rx site, uplink off;
  11/12 No data from rx site, uplink off;

  All stacked: Eb/N0 +1.6 dB *Decoded* rank 11;

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;
  31/01 Eb/N0 -4.9 dB, S/N -33.9 dB/1Hz, phase  177.4;
  01/02 No data from rx site, ADSL fault;
  02/03 No data from rx site, ADSL fault;
  03/04 No data from rx site, ADSL fault;
  04/05 Eb/N0 -1.6 dB, S/N -30.6 dB/1Hz, phase  174.5;
  05/06 Eb/N0 -1.4 dB, S/N -30.4 dB/1Hz, phase  171.1;
  06/07 Eb/N0 -1.1 dB, S/N -30.0 dB/1Hz, phase -172.8;
  07/08 Eb/N0 -2.8 dB, S/N -31.8 dB/1Hz, phase -169.2;
  08/09 Eb/N0 -5.8 dB, S/N -34.8 dB/1Hz, phase -179.3;
  09/10 Eb/N0 -1.3 dB, S/N -30.2 dB/1Hz, phase  175.7;
  10/11 Eb/N0 -0.3 dB, S/N -29.2 dB/1Hz, phase  173.6 *Decoded*
  11/12 Eb/N0 -0.1 dB, S/N -29.1 dB/1Hz, phase  174.7 *Decoded*

  First nine stacked: Eb/N0 6.8 dB *Decoded*

--
Paul Nicholson
--