Nice decode here for your transmission on 13 Fen 2017 20:40
found rank 0 ber 3.0469e-01 Eb/N0 10.7 M -1.697070885e+01 [XX] ps [ 0 0
0 0 0]
carrier phase: 5.3
carrier Eb/N0: 10.9
carrier S/N: 21.44 dB in 32.6 uHz
Switched the message to XX (sent to Stefan off list), so i don't spoil
Jacek / SQ5BPF
On Tue, 14 Feb 2017, DK7FC wrote:
Date: Tue, 14 Feb 2017 11:32:14 +0100
From: DK7FC <[email protected]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: LF: Re: DK7FC EbNaut message on 8270.1 Hz decoded nr Moscow by
Hi Alex, Paul, VLF,
It was a really happy moment when that decode appeared. Alex has sent me the
txt file to reproduce
the decode, tnx. My PC took 81 minutes to pass the whole decode process. There
was just that signle
decode, no additional false decodes or different phase combinations.
I attach the wav file, if someone wants to play with it (reproducing the
Alex' recent spectrograms have shown that the night propagation seems much
better regarding the
obtained SNR. Last night i tried a first 2 character transmission with same
parameters but a
different message. We will have that result in a few days i guess. I started
the message before
knowing that the first one successfully decoded.
Now i'm a bit more optimistic and will try 3 characters next:
f = 8270.100000 Hz
Start time: 14.Feb.2017 20:00:00 UTC
Symbol period: 30 s
CRC bits: 26
Duration: 8h, 32m, 0s (same duration as the first 2 messages)
Antenna current: 700 mA
Am 14.02.2017 10:35, schrieb Paul Nicholson:
Congratulations to Alex and Stefan. Another first
added to the list.
An excellent result, making good use of list decoding (list
rank 1744086). A good choice of settings by Stefan.
-67.2 dB in audio bandwidth.
Here in Todmorden, a nice decode of Stefan's 13th 20:40 message
at +15 dB Eb/N0. I expect you will decode that one Alex.