Anybody running at the moment - ? GPS locked L400b - looks like its been "on" since 9th 06z or before - I do have a stronger carrier on 8270,04 but think that's local http://kl7l.com/8270.jpg Laurenc
Late Yesterday at 2227GMT I switched the carrier on. At the beginning a message: Start 2015-12-29 23:00:00 Period 10 Length 2 Duration 01:01:20:00 Bits 368 Paul, can you decode it now after I repaire
Strong carrier again Uwe, http://abelian.org/vlf/fbins.shtml#p=1451559600&b=080&s=sp I could not decode anything. The following carrier measured 18.4 dB in one hour integration and the signal calcula
I got found rank 4044817 ber 4.0625e-01 Eb/N0 -3.0 M -8.368480206e-02 [DJ8WX] ps [ 4 -30 -30 -30 -30] This counts as a detection, not a decode because it was not the most significant output from the
That should be 19 chars. I spent 3 days trying to decode, but without success. The following carrier measures 16.4 dB in 1 hour and that should give me Eb/N0 around 0.1 dB which has a good chance of
Phase was looking good, until between 21:00 and 21:10 it did something, 2016-01-18_18:00:00 143.8 deg 2016-01-18_18:10:00 151.5 deg 2016-01-18_18:20:00 149.5 deg 2016-01-18_18:30:00 163.4 deg 2016-0
Hello Uwe, I can see you clearly below my local "transmission". But i guessed that Ebnaut is invisible?! 73, Stefan Am 18.01.2016 19:05, schrieb [email protected]: The carrier is on since 17
the carrier is on. a message will follow: start 2016-03-14 03:00:00 coding 8K19A CRC16 period 10.0 chars 19 duration 03:17:20:00 decodes / reports are welcome Uwe/dj8wx
Got that one. Eb/N0 = 1.2dB calculated from 31.3% BER. Measured carrier S/N gives Eb/N0 = 1.2dB also. Constant phase. Decode time 13 seconds. 55% of channel capacity. The S/N corresponds to -53dB in
I made three WAV files suitable for input to ebnaut-rx (the header contains frequency and time info). All files begin 02:59:00 and decode with a start offset of 60.00 Various sample rates and file si
Hi Paul, when using the SpecLab FFT-export method with very slow samplerates, I noticed that I had to add about four samples worth to the time offset for best decodes (presumably due to some internal
Thanks Markus, perhaps there's a sample offset error in the pipeline somewhere. I reproduced the same result with the Linux decoder too: needs T offset +1 to get 1.2 dB when using the 1s/s signal. An
VLF, there will be a special EbNaut transmission for Stefan/DK7FC on 8270Hz: the carrier is on. Coding: 8K19A, CRC16, symbol 60sec, chars 5, start 2016-12-17 07:00:00.0, duration 08:32:00.0 vy73 Uwe/
An easy decode here in Todmorden 762km with Eb/N0 = +2.3 dB, BER 33.2% S/N: 16.86 dB in 32.6 uHz, or -62dB in 2/5kHz audio bandwidth. Constant reference phase. -- Paul Nicholson --
