Re: LF: VLF NA Ebnaut

[Domenico IZ7SLZ <iz7slz.domenico@gmail.com>]

Hi VLF,

Again congratulations to all parties for these achievements. 

Paul, can you suggest us some commands for stacking  vlfrx-tools raw audio and how to phase shift and weighting the streams to be stacked ?

I wish all the group Happy New Year 2018.

Domenico, iz7slz

On 31 Dec 2017 15:38, "Paul Nicholson" <vlf0403@abelian.org> wrote:

VO1NA wrote:

> 28 Dec. 2100 utc, 16K21A, CRC-8, one character,
> 544 symbols, 1 minute each,
> 8270.0075 Hz.

The wonderfully stable and strong signal from
Newfoundland continues.  After three repeats of

the new letter:

Todmorden (3575 km)
-------------------

 28/29 Eb/N0 +11.4 dB, S/N -26.2 dB/1Hz, phase -175.0 *Decoded*
 29/30 Eb/N0 +13.7 dB, S/N -23.9 dB/1Hz, phase -168.4 *Decoded*

 30/31 Eb/N0 +13.4 dB, S/N -24.2 dB/1Hz, phase -175.7 *Decoded*

Bielefeld (4301.5 km DL4YHF)
----------------------------

 28/29 Eb/N0 -3.8 dB, S/N -41.4 dB/1Hz, phase 24.0;
 29/30 Eb/N0 +2.1 dB, S/N -35.4 dB/1Hz, phase 16.8 *Decoded*

 30/31 Eb/N0 -0.5 dB, S/N -38.1 dB/1Hz, phase 61.5 *Decoded*

Warsaw (5096.6 km SQ5BPF)
-------------------------

 28/29 Eb/N0 -2.2 dB, S/N -39.7 dB/1Hz, phase -163.5;
 29/30 Eb/N0 -1.2 dB, S/N -38.8 dB/1Hz, phase  175.9;

 30/31 Eb/N0 -7.1 dB, S/N -44.6 dB/1Hz, phase -173.7;

 All stacked: Eb/N0 +1.5dB *Decoded*

Cumiana (4533.4 km IK1QFK)
--------------------------

 28/29 Eb/N0  -5.6 dB, S/N -43.2 dB/1Hz, phase 5.7;

 29/30 Eb/N0 -10.4 dB, S/N -48.0 dB/1Hz;
 30/31 Eb/N0  +0.4 dB, S/N -37.2 dB/1Hz, phase -57.3;

 Last night decoded but was beaten by a stronger false decode.

Forest, VA (2415.3 km KE4RJQ)
-----------------------------

 28/29 Eb/N0 +3.7 dB, S/N -33.9 dB/1Hz, phase -33.0 *Decoded*
 29/30 Eb/N0 -5.0 dB, S/N -42.6 dB/1Hz, phase -35.3;

 30/31 Eb/N0 -5.1 dB, S/N -42.7 dB/1Hz, phase -57.4;

Hawley, TX (4240.3 km)
----------------------

 28/29 Eb/N0 -7.5 dB, S/N -45.1 dB/1Hz, phase -160.5;
 29/30 Eb/N0 -6.2 dB, S/N -43.8 dB/1Hz, phase -105.8;

 30/31 Eb/N0 -5.0 dB, S/N -42.6 dB/1Hz, phase  152.1;

 Stacked: Eb/N0 -4.1 dB and no phase correction allowed.

--
Paul Nicholson
--