Return to KLUBNL.PL main page

Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*VLF\:\s+W4DEX\s+in\s+Europe\s+at\s+8820\s+Hz\s*$/: 11 ]

Total 11 documents matching your query.

1. VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Paul Nicholson <>
Date: Tue, 02 Dec 2014 13:07:32 +0000
Spectrogram of W4DEX at Forest, VA (range 254km) http://abelian.org/vlf/tmp/141202a.png No sign of any frequency lock problems now. All the energy is concentrated in one frequency bin so the signal a
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00033.html (11,802 bytes)

2. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Paul Nicholson <>
Date: Tue, 02 Dec 2014 16:45:39 +0000
Another plot from Wolf's receiver at Bielefeld, http://abelian.org/vlf/tmp/141202e.gif This covers the full transmission from 22:30 UT in 50.5 uHz bandwidth. The line at 8820.0000 is 11.7 dB above th
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00035.html (10,143 bytes)

3. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Markus Vester <>
Date: Tue, 2 Dec 2014 12:24:03 -0500
Paul, once more, very impressive work! I'm tempted to call that a TA first for Dex and Wolf, and Renato at even larger distance is getting very close. But most of all, I think it's the cooperative ef
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00036.html (16,052 bytes)

4. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Paul Nicholson <>
Date: Tue, 02 Dec 2014 18:20:07 +0000
Indeed it is tempting. With that 50.5 uHz spectrum the odds of a false peak is probably one in a few tens of thousands. Perhaps Dex should change frequency a small amount before tonight's transmissio
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00040.html (12,254 bytes)

5. RE: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: <>
Date: Tue, 2 Dec 2014 13:54:21 -0500
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00041.html (31,470 bytes)

6. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Dexter McIntyre W4DEX <>
Date: Tue, 02 Dec 2014 14:17:16 -0500
Dex
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00045.html (10,927 bytes)

7. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: wolf_dl4yhf <>
Date: Tue, 02 Dec 2014 21:08:59 +0100
Hello Paul, Markus, Dex and all, Thanks for the details and the effort - well done ! In fact 'VLF6' is rather noisy, partly due to the fact that it uses an analog FM link to carry the broadband VLF s
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00047.html (9,797 bytes)

8. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Paul Nicholson <vlf04>
Date: Tue, 02 Dec 2014 20:36:41 +0000
I swept a range of times and bandwidths and this one from Bielefeld is even more convincing http://abelian.org/vlf/tmp/141202j.gif That's 13.4 dB S/N averaged over the 3 hours. More from LWPC Bielefe
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00048.html (10,508 bytes)

9. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Paul Nicholson <>
Date: Thu, 04 Dec 2014 18:00:53 +0000
Examining W4DEX at Todmorden overnight on 1st/2nd Dec... S/N dB in 278uHz and signal phase in 1 hour steps: From dB phase 22:30 7.6 80.4 23:00 8.9 90.9 23:30 9.1 115.6 00:00 6.3 106.2 00:30 7.9 30.6
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00061.html (11,712 bytes)

10. RE: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: <>
Date: Thu, 4 Dec 2014 14:28:35 -0500
Paul, Good info and results! LWPC is acknowledged as having a rather poor terminator model; no suggested workaround that I know of, other than customized LWPC or other customized EIW modeler. Do you
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00062.html (13,428 bytes)

11. Re: VLF: W4DEX in Europe at 8820 Hz (score: 1)
Author: Paul Nicholson <>
Date: Fri, 05 Dec 2014 07:18:42 +0000
A spectrum from the natural radio receiver at Sebring Florida 27.516N,81.517W range 869.4 km run by Joel Gonzalez, http://abelian.org/vlf/tmp/141204b.png S/N is 12.6 dB in 55.5 uHz. The noise level t
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-12/msg00064.html (11,483 bytes)


This search system is powered by Namazu