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Re: VLF: New carrier on 6470.005 Hz

To: "[email protected]" <[email protected]>
Subject: Re: VLF: New carrier on 6470.005 Hz
From: DK7FC <[email protected]>
Date: Tue, 18 Apr 2017 19:17:32 +0200
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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 think that this is possible over a 1990 km distance.
If this is true, then it is a first detection between DL and RU on the 46 km band :-)


But why only these few pixels? Is it due to propagation? Then we should see the same short dash each day, if i can keep the signal on the air. It looks like 2 or 3 pixels, about 3...5 hours. We need to find the time when the band opens and when it closes.
Let me calculate: http://abelian.org/ebnaut/calc.php?sndb=10&snbws=0.000047&snmps=&code=16K21&sp=25&crc=18&nc=2&submit=Calculate
So 5 hours is critical. But we will get a new trace from this night, hopefully.
I could start to run a first EbNaut night transmission tomorrow.
When will you be in the garden next? :-)

73, Stefan


Am 18.04.2017 18:47, schrieb Alex K:
Hello Stefan, VLF,
I have ~abt little trace (bright pixels) on 6470.005 in 47uHz and 21uHz.
73!


Вторник, 18 апреля 2017, 19:18 +03:00 от Paul Nicholson <[email protected]>:


Stefan wrote:

 > The carrier will stay on air for at least 1 day,

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 16.5 dB +16.4 deg 0.18 fT
  05:00 to 08:00 17.4 dB +51.5 deg 0.15 fT
  08:00 to 11:00 19.8 dB +68.3 deg 0.20 fT
  11:00 to 14:00 19.7 dB +62.3 deg 0.19 fT

--
Paul Nicholson
--


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