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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*VLF\:\s+A\s+300\s+char\s+message\?\s*$/: 16 ]

Total 16 documents matching your query.

1. VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Fri, 03 Nov 2017 23:58:35 +0100
Hi Paul, Actually there is some time to try something during the daytime tomorrow. If you like, we could try a long 4K19A message. I prepared something: f = 8270.1000 Hz Start time: 04.November.2017 
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00031.html (8,776 bytes)

2. Re: VLF: A 300 char message? (score: 1)
Author: Markus Vester <>
Date: Fri, 3 Nov 2017 21:08:49 -0400
Hi Stefan, as a pleasant surprise, your signal is now well visible on my suburban grabber in Nuernberg. I would be interested in a continuous carrier tomorrow to see whether propagation holds on in d
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00032.html (10,000 bytes)

3. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Sun, 05 Nov 2017 11:42:57 +0100
2nd transmission aborted at 8:40 UTC :-( Antenna current dropped by more than 50 mA due to heavy rain... 73, Stefan Am 03.11.2017 23:58, schrieb DK7FC: Hi Paul, Actually there is some time to try som
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00042.html (10,790 bytes)

4. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Sat, 11 Nov 2017 12:11:32 +0100
tonite, another attempt: f = 8270.1000 Hz Start time: 11.November.2017  17:00:00 UTC Symbol period: 6 s Characters: 300 CRC bits: 16 Coding 4K19A Duration: 12:13:36h Antenna current: 630 mA 73, Stefa
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00092.html (11,882 bytes)

5. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Sat, 11 Nov 2017 18:12:49 +0100
message start delayed by 15 minutes... Am 11.11.2017 12:11, schrieb DK7FC: tonite, another attempt: f = 8270.1000 Hz Start time: 11.November.2017  17:00:00 UTC Symbol period: 6 s Characters: 300 CRC
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00096.html (12,211 bytes)

6. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Sun, 12 Nov 2017 13:23:44 +0100
What a terrible rainy day here! Since several days there is no sun. The tree grabber shut down because the accus are quite empty! This didn't happen since more than 9 months now. The 300 character me
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00097.html (12,497 bytes)

7. Re: VLF: A 300 char message? (score: 1)
Author: Paul Nicholson <>
Date: Sun, 12 Nov 2017 14:02:45 +0000
Great. So far no result from last night, although the decoder is still working through a full phase search with 6Meg list size (49 Gbyte RAM). Last night was quiet. Another night should do it if the
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00098.html (12,611 bytes)

8. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Sun, 12 Nov 2017 15:49:09 +0100
Hi Paul, Wow, 49 GB :-) Here it took 4600 seconds for a full phase search and a list length of 200. 6E6 list size? The calculator page says 325804 is optimum. Wouldn't it be more promising to try a s
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00099.html (13,019 bytes)

9. Re: VLF: A 300 char message? (score: 1)
Author: Paul Nicholson <>
Date: Sun, 12 Nov 2017 16:45:51 +0000
Oh, it's complicated with longer messages. It's that pesky 0.3 bits per character of redundancy. It makes the optimum list length depend on S/N. With the weakest signals, the optimum becomes much lon
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00100.html (14,897 bytes)

10. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Sun, 12 Nov 2017 18:49:37 +0100
RR, understood. Am 12.11.2017 17:45, schrieb Paul Nicholson: The fact that your message didn't decode with a 1E6 list and uniform phase search told me that it was going to be unlikely to decode at al
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00101.html (13,446 bytes)

11. Re: VLF: A 300 char message? (score: 1)
Author: Paul Nicholson <>
Date: Tue, 14 Nov 2017 11:03:09 +0000
Copied "HELLO PAUL AND THE REST OF THE LF GROUP! WELL, THIS IS THE NEW LONGEST MESSAGE TRANSMITTED ON VLF. THANKS TO ALL STATIONS WHO PARTICIPATE IN THE EXPERIMENTS SINCE 2010! VLF IS A GREAT REAGION
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00108.html (13,572 bytes)

12. Re: VLF: A 300 char message? (score: 1)
Author: Markus Vester <>
Date: Tue, 14 Nov 2017 07:30:52 -0500
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00109.html (12,742 bytes)

13. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Tue, 14 Nov 2017 13:46:28 +0100
Hi Paul, VLF, Great! I think this is the longest EbNaut message ever, so far ;-) Thanks for the decode. We needed 3 days but the right 2 days would have been fine as well. Did you try to decode the 3
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00110.html (14,089 bytes)

14. Re: VLF: A 300 char message? (score: 1)
Author: Paul Nicholson <vl>
Date: Tue, 14 Nov 2017 14:03:43 +0000
Your email client has changed the spacing. There is a double space between ALL and STATIONS, and another double between D and 73. md5 sum is bd9ebb682484d1cf784625824ef749fd Yes, no result but I mig
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00111.html (11,492 bytes)

15. Re: VLF: A 300 char message? (score: 1)
Author: Markus Vester <>
Date: Wed, 15 Nov 2017 11:25:42 -0500
Attached screenshots show the unspread spectrum and the time-domain correlation for DF6NM, Nov. 12-13th. Here are Eb/N0 estimates derived from the correlation: date DF6NM DL0AO (west) Nov. dB dB 11-1
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00113.html (14,847 bytes)

16. Re: VLF: A 300 char message? (score: 1)
Author: DK7FC <>
Date: Wed, 15 Nov 2017 20:52:43 +0100
Hi Markus, Interesting, i didn't expect such a difference. It would be interesting to see how the Raspi with the octo-soundcard would perform at DL0AO when all 3 antennas were used. That could make t
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00114.html (15,358 bytes)


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