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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*VLF\:\s+New\s+carrier\s+on\s+6470\.005\s+Hz\s*$/: 24 ]

Total 24 documents matching your query.

1. VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Mon, 17 Apr 2017 22:36:38 +0200
VLF, Now the coil resonance is right on 6470 Hz. A + 5 Hz or a - 5 Hz step is leading to a lower antenna current. The carrier will stay on air for at least 1 day, that's the plan. An EbNaut message w
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00245.html (12,068 bytes)

2. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Mon, 17 Apr 2017 22:38:03 +0200
PS: Carrier on air since 20:05 UTC. 73 Am 17.04.2017 22:36, schrieb DK7FC: VLF, Now the coil resonance is right on 6470 Hz. A + 5 Hz or a - 5 Hz step is leading to a lower antenna current. The carrie
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00246.html (12,290 bytes)

3. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Tue, 18 Apr 2017 14:33:06 +0200
There was an interruption of the carrier between 5:28...5:48 UTC. This was again by reaching the -20 mA safety limit. It was just due to rain which pulled the resonance to much downwards, despite the
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00254.html (13,224 bytes)

4. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: Paul Nicholson <>
Date: Tue, 18 Apr 2017 16:16:03 +0000
Getting good readings from the excellent signal. So far we have, S/N in 92.6 uHz and absolute phase 20:00 to 23:00 19.6 dB +14.5 deg 0.25 fT 23:00 to 02:00 14.5 dB -3.2 deg 0.22 fT 02:00 to 05:00 16.
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00258.html (12,796 bytes)

5. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Tue, 18 Apr 2017 19:17:32 +0200
Hello Alex, Indeed! Wow! Hm... It is hard to belive somehow. These few pixels are not weak at all. Can this be true? About 10 dB in 47 uHz. With such a signal we could even try EbNaut. I did not thin
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00261.html (13,937 bytes)

6. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Wed, 19 Apr 2017 08:55:30 +0200
...i decided to delay the start of the transmission to 08:00 UTC. Maybe this gives a better phase stability over the path and transmission period. 73, Stefan Am 18.04.2017 14:33, schrieb DK7FC: There
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00269.html (12,523 bytes)

7. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: g3zjo <>
Date: Wed, 19 Apr 2017 09:06:07 +0100
Well I thought yesterday that I could see nothing on 6470.005 Hz from that session but looking at my Grabber http://www.g3zjo.talktalk.net/vlfgrabber.htm VLF4 maybe there are a few coherent pixels. N
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00271.html (11,864 bytes)

8. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: Paul Nicholson <>
Date: Wed, 19 Apr 2017 08:28:48 +0000
Here's the complete measurement: S/N in 92.6 uHz, absolute phase, flux density 20:00 to 23:00 19.6 dB +14.5 deg 0.25 fT 23:00 to 02:00 14.5 dB -3.2 deg 0.22 fT 02:00 to 05:00 16.5 dB +16.4 deg 0.18 f
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00272.html (12,805 bytes)

9. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Wed, 19 Apr 2017 11:03:11 +0200
Hi Paul, Thanks for the analysis. Well with 19.8 dB in 92.6 uHz, my currently running transmission is maybe to optimistic. Then we are very very very very close to the limit! http://abelian.org/ebnau
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00274.html (13,457 bytes)

10. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: Paul Nicholson <>
Date: Wed, 19 Apr 2017 09:19:18 +0000
Yes it looks borderline. But the blanker setting I used for the carrier measurements was appropriate for nighttime. I can probably gain a dB or two when I decode the EbNaut by using a daytime thresho
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00275.html (12,421 bytes)

11. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Wed, 19 Apr 2017 14:04:14 +0200
Hello Paul, Something went wrong. The transmission should have stopped at 11:48:16 UTC. But the PSK continues. Obviously i made a mistake. The symbol time is correct, one can also see it by the psk s
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00278.html (13,113 bytes)

12. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: Paul Nicholson <>
Date: Wed, 19 Apr 2017 13:04:24 +0000
I tweaked the blanker and got another 1.5 dB S/N. Ok, the 30 chars didn't decode. I guess it has stopped now if 40 chars. That will be interesting, still possible. Can you confirm it stopped at 12:52
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00281.html (12,781 bytes)

13. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Wed, 19 Apr 2017 15:11:16 +0200
Yes, i confirm, see attachment. 73, Stefan Am 19.04.2017 15:04, schrieb Paul Nicholson: I tweaked the blanker and got another 1.5 dB S/N. Ok, the 30 chars didn't decode. I guess it has stopped now if
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00282.html (12,677 bytes)

14. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: Paul Nicholson <>
Date: Wed, 19 Apr 2017 15:55:17 +0000
OK, copied 40 chars:- "CQ CQ ON THE 46KM BAND DE DK7FC JN49IK K" Carrier Eb/N0: 0.0 dB BER: 33.8 % List rank: 0 Carrier S/N: 23.5 dB in 57.0 uHz Carrier phase: 66.2 degrees Reference phase: constant
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00286.html (13,759 bytes)

15. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Thu, 20 Apr 2017 11:02:16 +0200
Hi Paul, Alex, VLF, Am 19.04.2017 17:55, schrieb Paul Nicholson: OK, copied 40 chars:-  "CQ CQ ON THE 46KM BAND DE DK7FC JN49IK K" The message is correct! :-) That's amazing. Now i thought back to 20
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00289.html (13,252 bytes)

16. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: Paul Nicholson <>
Date: Thu, 20 Apr 2017 10:44:44 +0000
An easy decode here: carrier Eb/N0: 6.2 dB carrier S/N: 16.75 dB in 40.1 uHz -- Paul Nicholson --
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00293.html (13,403 bytes)

17. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: Jacek Lipkowski <>
Date: Fri, 21 Apr 2017 08:48:08 +0200 (CEST)
Received the ebnaut transmission on 20170419 19:00 UTC 6470.1Hz in Warsaw (text sent offline for verification): found rank 11 ber 4.3510e-01 Eb/N0 -0.1 M -1.023133636e+00 [xx] ps [ 32 -60 -60 -30 -30
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00301.html (13,874 bytes)

18. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: g3zjo <>
Date: Fri, 21 Apr 2017 08:25:53 +0100
On 20/04/2017 10:02, DK7FC wrote: Last night i run another message: f = 6470.100000 Hz Start time: 19.Apr.2017   19:00:00 UTC Symbol period: 30 s Characters: 2 CRC bits: 20 Coding 16K21A Duration: 6h
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00302.html (16,951 bytes)

19. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Mon, 01 May 2017 14:06:25 +0200
Hello Alex, Thank you for trying! I guess we will have much better results in November or December this year. But we keep on trying. The days become longer and longer, maybe we can make it during day
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00000.html (11,623 bytes)

20. Re: VLF: New carrier on 6470.005 Hz (score: 1)
Author: DK7FC <>
Date: Mon, 01 May 2017 14:50:45 +0200
Hello Paul, Could you help us by analysing the wav file produced by Alex (.zip file)? I tried to get a decode (the offset between file start and transmission start is 1811.77 seconds) but my PC (RAM)
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-05/msg00003.html (11,330 bytes)


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