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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*VLF\:\s+EbNaut\s+transmission\s+on\s+8270\.1\s+Hz\s+again\s+\-\s+73\s*$/: 7 ]

Total 7 documents matching your query.

1. Re: VLF: EbNaut transmission on 8270.1 Hz again - 73 (score: 1)
Author: Markus Vester <>
Date: Thu, 28 Apr 2016 08:07:23 -0400
Hi Stefan, this time I finally got it (see screenshot). The QRN was not as loud as the night before (and the ground clip for the PC firmly connected ;-) For the long sequence, two 4.4 hour FFT-export
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00356.html (13,288 bytes)

2. Re: VLF: EbNaut transmission on 8270.1 Hz again - 73 (score: 1)
Author: Paul Nicholson <>
Date: Thu, 28 Apr 2016 13:06:50 +0000
It actually keeps the decode with the best path metric. The other options (best rank, best BER) don't perform so well on average. The log file doesn't show the path metric though, I'll fix that for
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00357.html (11,829 bytes)

3. Re: VLF: EbNaut transmission on 8270.1 Hz again - 73 (score: 1)
Author: Markus Vester <>
Date: Thu, 28 Apr 2016 10:41:12 -0400
Hi Paul, thanks for the explanation! So the decoder does not only consider the symbol phase but also the magnitude? In case of time-variable noise (e.g. changing QRN), you will then want to flatten o
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00358.html (13,319 bytes)

4. Re: VLF: EbNaut transmission on 8270.1 Hz again - 73 (score: 1)
Author: DK7FC <>
Date: Thu, 28 Apr 2016 17:37:20 +0200
R Markus, the message is correct. Sorry Paul. It can happen... BTW Markus left a very clear dash today on my new E-W loop on the tree, visible in the '6000' window! This looks promising for a regular
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00359.html (12,981 bytes)

5. Re: VLF: EbNaut transmission on 8270.1 Hz again - 73 (score: 1)
Author: Paul Nicholson <>
Date: Thu, 28 Apr 2016 18:28:35 +0000
Stefan, want to try EbNaut at a lower frequency? That would be a good challenge. 6kHz perhaps? -- Paul Nicholson --
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00362.html (11,133 bytes)

6. Re: VLF: EbNaut transmission on 8270.1 Hz again - 73 (score: 1)
Author: DK7FC <>
Date: Thu, 28 Apr 2016 20:57:59 +0200
Hi Paul, Remember i've been on 6.47 kHz some time ago ;-) Do you expect some advantages from the 50 km band? Or is it just as a challenge? It is interesting to dream about but shouldn't we try to get
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00365.html (12,666 bytes)

7. Re: VLF: EbNaut transmission on 8270.1 Hz again - 73 (score: 1)
Author: Paul Nicholson <>
Date: Fri, 29 Apr 2016 06:47:38 +0000
I found the mistake. Had the wrong date in the vtread command. Doh! Decoded '73' with Eb/N0 = +9.7 dB, constant reference phase. Carrier S/N: 21.12 dB in 34.0 uHz -- Paul Nicholson --
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00372.html (11,375 bytes)


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