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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*VLF\:\s+EbNaut\s+tonite\s*$/: 36 ]

Total 36 documents matching your query.

21. Re: VLF: EbNaut tonite (score: 1)
Author: Markus Vester <[email protected]>
Date: Tue, 23 May 2017 06:20:27 -0400
Hi Stefan, sorry, no result from here due to a silly setup error: A while ago, I had the changed the FFT resolution from 62.8 to 31.4 uHz, but forgotten to double the number of exported bins. 73, Mar
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00183.html (11,728 bytes)

22. Re: VLF: EbNaut tonite (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 23 May 2017 18:48:10 +0200
VLF, Another one: f = 8270.100000 Hz Start time: 23.May.2017   18:00:00 UTC Symbol period: 40 s Characters: 4 CRC bits: 3 Coding 16K21A Duration: 8h, 21m, 20s Antenna current: 700 mA 73, Stefan Am 22
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00192.html (13,989 bytes)

23. Re: VLF: EbNaut tonite (score: 1)
Author: Paul Nicholson <[email protected]>
Date: Wed, 24 May 2017 04:19:56 +0000
A couple of easy decodes of the very strong signal from Stefan. Eb/N0 8.5 dB. BER 18.6 %. constant reference phase. carrier S/N 26.86 dB in 32.9 uHz, -17.97 dB in 1Hz, -51.95 dB in 2.5kHz. Eb/N0 12.6
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00195.html (14,290 bytes)

24. Re: VLF: EbNaut tonite (score: 1)
Author: Markus Vester <[email protected]>
Date: Wed, 24 May 2017 06:17:55 -0400
Got a fine decode in Nuernberg with 6.8 dB Eb/N0. Kaum macht man's richtig geht's ;-) Best 73, Markus --Ursprüngliche Mitteilung-- Von: DK7FC <[email protected]> An: rsgb_lf_group <rsgb_lf_group
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00197.html (11,180 bytes)

25. Re: VLF: EbNaut tonite (score: 1)
Author: DK7FC <[email protected]>
Date: Wed, 24 May 2017 12:48:23 +0200
Hi Paul and Markus, Great results! Thanks for the reception and decode. Well, let's try something for the record list again: f = 8270.100000 Hz Start time: 24.May.2017   20:00:00 UTC Symbol period: 1
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00198.html (14,722 bytes)

26. Re: VLF: EbNaut tonite (score: 1)
Author: Markus Vester <[email protected]>
Date: Wed, 24 May 2017 07:03:00 -0400
Good! The DL0AO grabber has just come back online again. The current buildup of easterly QRN is brightening the separate "6000" E- and H-field spectrograms, but seems to be well suppressed on the syn
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00199.html (12,977 bytes)

27. Re: VLF: EbNaut tonite (score: 1)
Author: Jacek Lipkowski <[email protected]>
Date: Wed, 24 May 2017 18:43:25 +0200 (CEST)
Decoded the 20170522 message on 8270.1Hz found rank 0 ber 3.4079e-01 Eb/N0 2.8 M -3.252938271e+00 [xxxxx xxxxxx] ps [ 0 0 0 0 0] carrier phase: 5.7 deg carrier Eb/N0: 2.2 dB carrier Es/N0: -11.31 dB
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00202.html (14,090 bytes)

28. Re: VLF: EbNaut tonite (score: 1)
Author: Jacek Lipkowski <[email protected]>
Date: Wed, 24 May 2017 21:12:45 +0200 (CEST)
Decoded the 20170523 8270.1Hz transmission in Warsaw KO02md: found rank 0 ber 3.3245e-01 Eb/N0 5.0 M -3.513146400e+00 [xxxx] ps [ 0 0 0 0 0] carrier phase: -3.2 deg carrier Eb/N0: 5.0 dB carrier Es/N
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00204.html (14,534 bytes)

29. Re: VLF: EbNaut tonite (score: 1)
Author: DK7FC <[email protected]>
Date: Thu, 25 May 2017 16:40:35 +0200
...85 % of the message is already through, i.e. 0.7 dB missing. So far no problems. I hope there will be no interruption of the PSK again. The PSK can be followed at http://www.iup.uni-heidelberg.de/
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00213.html (15,487 bytes)

30. Re: VLF: EbNaut tonite (score: 1)
Author: Paul Nicholson <[email protected]>
Date: Thu, 25 May 2017 19:50:31 +0000
Copied "THIS IS THE FIRST SMS SENT OVER VLF BY RADIO AMATEURS. THANKS TO PAUL NICHOLSON, DL4YHF AND DF6NM FOR SOFTWARE DEVELOPMENTS. JOIN IN THE EXPERIMENTS! 73, DK7FC" Rank 0, constant reference pha
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00214.html (14,455 bytes)

31. Re: VLF: EbNaut tonite (score: 1)
Author: Jacek Lipkowski <[email protected]>
Date: Thu, 25 May 2017 22:12:19 +0200 (CEST)
I've tried the decoded message in ebnaut signal analysis mode, the decoder returns: initial reference phase 45.0 amplitude 2.401e-03 carrier phase: 45.4 carrier Eb/N0: -7.1 carrier S/N: 22.50 dB in 1
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00215.html (14,768 bytes)

32. Re: VLF: EbNaut tonite (score: 1)
Author: DK7FC <[email protected]>
Date: Thu, 25 May 2017 22:44:27 +0200
Hi Jacek, Hmm maybe you can build a RX loop and build a software cardioid to get some gain?! 8.27 kHz could be enough far away from the mains QRM... 73, Stefan Am 25.05.2017 22:12, schrieb Jacek Lipk
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00217.html (13,773 bytes)

33. Re: VLF: EbNaut tonite (score: 1)
Author: Jacek Lipkowski <[email protected]>
Date: Fri, 26 May 2017 00:56:05 +0200 (CEST)
Hmm maybe you can build a RX loop and build a software cardioid to get some gain?! 8.27 kHz could be enough far away from the mains QRM... my antenna is in the middle of Warsaw. i live in an old soci
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00218.html (14,169 bytes)

34. Re: VLF: EbNaut tonite (score: 1)
Author: DK7FC <[email protected]>
Date: Mon, 29 May 2017 15:13:26 +0200
Hi Paul, I wonder why the reference phase was constant, because we used day and night for the transmission. Do you stop the decoder when you get a valid result or do you let it run until the process
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00265.html (14,346 bytes)

35. Re: VLF: EbNaut tonite (score: 1)
Author: Paul Nicholson <[email protected]>
Date: Mon, 29 May 2017 18:02:36 +0000
I wondered that too so I let the decoder run the full phase search, with no better result. I also tried the amplitude and power normalisation trick but that didn't improve the result either. -- Paul
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00270.html (14,316 bytes)

36. Re: VLF: EbNaut tonite (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 30 May 2017 12:49:45 +0200
Am 29.05.2017 20:02, schrieb Paul Nicholson: I also tried the amplitude and power normalisation trick but that didn't improve the result either. I thought a bit about noise cancelling techniques. You
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00279.html (14,250 bytes)


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