Message-ID: <5A0067E5.5010009@posteo.de>
Date: Mon, 06 Nov 2017 14:47:17 +0100
From: DK7FC <selberdenken@posteo.de>
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References: <15f68ccfd03-c09-1dcf0@webjas-vaa134.srv.aolmail.net> <Pine.LNX.4.64.1710291833570.23786@plato.ucs.mun.ca> <40168a26-8991-6998-e541-585a8575ad32@abelian.org> <59FCF49B.9050703@posteo.de> <59FF4368.5070904@posteo.de> <5A0064E2.9020605@posteo.de>
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Subject: Re: VLF: EbNaut message over 2877 km, DK7FC to RC4HAA
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PS: The RX at RC4HAA is a 100m long wire with a passive RC filter and an 
isolation transformer, i.e. no preamp is used. So it is a pure E field 
RX hanging in the middle of a city with a population of > 1 million people.

Am 06.11.2017 14:34, schrieb DK7FC:
> Hello VLF group and RC4HAA team,
>
> I am glad to report about the successful decode of my 1 character 
> EbNaut message on the VLF RX site at RC4HAA.
>
> This is a land path distance of 2877 km, 
> http://k7fry.com/grid/?qth=JN49IK00&from=LO53CF34
>
> So far the best DX between Germany and Russia below 9 kHz.
>
> It is my new personal ODX on VLF (the old ODX was just 4 km shorter).
>
> A screenshot of the decoder result as well as the log file is 
> attached. The unexpected good SNR suggests that even longer messages 
> are possible within a single night. Also we need to consider that it 
> was a very noisy night again, with thunderstorms in Spain and Italy.
>
> A new message announcement will follow soon, next time i'm trying 2 
> characters.
>
> 73, Stefan
>
>
>
> Am 05.11.2017 17:59, schrieb DK7FC:
>> VLF,
>>
>> Tonite i'm trying to transfer a 1 charcter EbNaut message to RC4HAA:
>>
>> *f = 8270.1000 Hz
>> Start time: 05.November.2017  16:51:00 UTC
>> Symbol period: 180 s
>> Characters: 1
>> CRC bits: 6
>> Coding 8K19A
>> Duration: 12h
>> Antenna current: 600 mA*
>>
>> If someone else wants to try, dont hesitate...
>>
>> 73, Stefan

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PS: The RX at RC4HAA is a 100m long wire with a passive RC filter and
an isolation transformer, i.e. no preamp is used. So it is a pure E
field RX hanging in the middle of a city with a population of &gt; 1
million people.<br>
<br>
Am 06.11.2017 14:34, schrieb DK7FC:
<blockquote cite="mid:5A0064E2.9020605@posteo.de" type="cite">
  <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
Hello VLF group and RC4HAA team,<br>
  <br>
I am glad to report about the successful decode of my 1 character
EbNaut message on the VLF RX site at RC4HAA.<br>
  <br>
This is a land path distance of 2877 km,
  <a moz-do-not-send="true" class="moz-txt-link-freetext"
 href="http://k7fry.com/grid/?qth=JN49IK00&amp;from=LO53CF34">http://k7fry.com/grid/?qth=JN49IK00&amp;from=LO53CF34</a><br>
  <br>
So far the best DX between Germany and Russia below 9 kHz.<br>
  <br>
It is my new personal ODX on VLF (the old ODX was just 4 km shorter).<br>
  <br>
A screenshot of the decoder result as well as the log file is attached.
The unexpected good SNR suggests that even longer messages are possible
within a single night. Also we need to consider that it was a very
noisy night again, with thunderstorms in Spain and Italy.<br>
  <br>
A new message announcement will follow soon, next time i'm trying 2
characters.<br>
  <br>
73, Stefan<br>
  <br>
  <br>
  <br>
Am 05.11.2017 17:59, schrieb DK7FC:
  <blockquote cite="mid:59FF4368.5070904@posteo.de" type="cite">
    <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
VLF,  <br>
    <br>
Tonite i'm trying to transfer a 1 charcter EbNaut message to RC4HAA:<br>
    <br>
    <b>f = 8270.1000 Hz<br>
Start time: 05.November.2017  16:51:00 UTC<br>
Symbol period: 180 s<br>
Characters: 1<br>
CRC bits: 6<br>
Coding 8K19A<br>
Duration: 12h <br>
Antenna current: 600 mA</b><br>
    <br>
If someone else wants to try, dont hesitate...<br>
    <br>
73, Stefan<br>
  </blockquote>
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