Hello Joe,
Very impressive! My congrats. You will now quickly see that the limiting
factor is the number of active stations on VLF. But never mind, we can
make a big party on that playground now :-)
Now the last steps to improve your system seems to be QRO. The phase
stability and timing seems to work very well now :-)
73, Stefan
Am 23.12.2017 13:50, schrieb Paul Nicholson:
VO1NA wrote:
> 2100 utc tonight [21st], 16K21A, CRC-8, one character,
> 544 symbols, 1 minute each, 8270.0075 Hz.
> Last night's message will be repeated tonight [22nd].
Results from both nights.
Todmorden (3575 km)
-------------------
21/22 Eb/N0 +11.1 dB, S/N -26.5 dB in 1Hz, phase 176.5, *Decoded*
22/23 Eb/N0 +10.3 dB, S/N -27.3 dB in 1Hz, phase -167.2 *Decoded*
Bielefeld (4301.5 km DL4YHF)
----------------------------
21/22 Eb/N0 +4.7 dB, S/N -32.9 dB in 1Hz, phase -22.8, *Decoded*
22/23 Eb/N0 +1.4 dB, S/N -36.2 dB in 1Hz, phase -35.3, *Decoded*
Warsaw (5096.6 km SQ5BPF)
-------------------------
21/22 Eb/N0 +1.0 dB, S/N -36.6 dB in 1Hz, phase 149.1, *Decoded*
22/23 Eb/N0 -4.2 dB, S/N -41.8 dB in 1Hz, phase 172.2;
Stacked Eb/N0 +1.6 dB, beaten by false decode at +2.3 dB;
Above from data on stream server (via vorbis)
Below, direct from local raw recording
21/22 Eb/N0 +2.0 dB, S/N -35.6 dB in 1Hz, *Decoded*
Cumiana (4533.4 km IK1QFK)
--------------------------
21/22 No reception, rx fault
22/23 Eb/N0 +1.6 dB, S/N -36.0 dB in 1Hz, phase 39.2, *Decoded*
First Canada to Italy VLF message!
Forest, VA (2415.3 km KE4RJQ)
-----------------------------
21/22 Eb/N0 -0.4 dB, S/N -38.0 dB in 1Hz, phase 62.5;
22/23 Eb/N0 -3.8 dB, S/N -41.3 dB in 1Hz, phase -15.8;
--
Paul Nicholson
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