Message-ID: <4F6A35E9.4060905@iup.uni-heidelberg.de>
Date: Wed, 21 Mar 2012 21:11:21 +0100
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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To: rsgb_lf_group@blacksheep.org,
        Edgar J Twining <edgarjtwining@virginbroadband.com.au>,
        vk7zl@internode.on.net
References: <4F69FE55.20800@iup.uni-heidelberg.de>
In-Reply-To: <4F69FE55.20800@iup.uni-heidelberg.de>
Subject: Re: LF: Re: Fwd: DK7FC ?
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I just checked the different path between VK7ZL and VK1SV to me. The=20
distance between them appears small but the path may have significant=20
differences. Maybe one hop on the ground is in water. This may explain=20
why Edgar has often good results where Dimitris has nothing.

http://dl.dropbox.com/u/19882028/LF/VK1SV_VK7ZL_DK7FC.png
http://dl.dropbox.com/u/19882028/LF/different%20paths.png

73, Stefan/DK7FC

Am 21.03.2012 17:14, schrieb Stefan Sch=E4fer:
>  Hi David, Markus, LF,
>
> Thanks for the information about Bob's capture.
> I forward this capture to the group, if we (Bob and me) want to have a=20
> official confirmation that these traces are accepted as a valid=20
> detection. We have to check if the transmit times are matching.
> Of course a bit clearer detection would be wishful but we are on the=20
> limit of what is possible with a non-commercial setup, far away from=20
> QSO mode and full call reception. Most odd for HF amateurs, probably=20
> ;-) Anyway an amateur generated signal that changed the brightness of=20
> a few pixels in a spectrogram on the right frequency and time :-)
>
> VK7ZL to DK7FC is a path of 16784 km,=20
> http://no.nonsense.ee/qthmap/?qth=3DQE37MF&from=3Djn49ik00wd, unbelivab=
le.=20
> I hope there are some days left to see further traces which confirms=20
> things.
> Now i hope for Markus' detective help ;-)
>
> My grabber archive captures from yesterday, 20. March 2012, shows a C=20
> at 17:00 UTC, here discribed as a K in Bob's spectrogram. Actually i=20
> think there seem to be some bright pixels where one expects them if it=20
> would be a C. http://dl.dropbox.com/u/19882028/LF/EU60_53273.jpg
>
> At ~19:25 UTC (the 7) i was actually transmitting a 7, see=20
> http://dl.dropbox.com/u/19882028/LF/EU60_53318.jpg
>
> For me that is convincing and so i would like to congratulate Bob/VK7ZL.
>
> Comments welcome.
>
> 73, Stefan/DK7FC
>
>

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I just checked the different path between VK7ZL and VK1SV to me. The
distance between them appears small but the path may have significant
differences. Maybe one hop on the ground is in water. This may explain
why Edgar has often good results where Dimitris has nothing.<br>
<br>
<a class="moz-txt-link-freetext" href="http://dl.dropbox.com/u/19882028/LF/VK1SV_VK7ZL_DK7FC.png">http://dl.dropbox.com/u/19882028/LF/VK1SV_VK7ZL_DK7FC.png</a><br>
<a class="moz-txt-link-freetext" href="http://dl.dropbox.com/u/19882028/LF/different%20paths.png">http://dl.dropbox.com/u/19882028/LF/different%20paths.png</a><br>
<br>
73, Stefan/DK7FC<br>
<br>
Am 21.03.2012 17:14, schrieb Stefan Sch&auml;fer:
<blockquote cite="mid:4F69FE55.20800@iup.uni-heidelberg.de" type="cite">
  <meta content="text/html; charset=ISO-8859-1"
 http-equiv="Content-Type">
&nbsp;Hi David, Markus, LF, <br>
  <br>
Thanks for the information about Bob's capture.<br>
I forward this capture to the group, if we (Bob and me) want to have a
official confirmation that these traces are accepted as a valid
detection. We have to check if the transmit times are matching.<br>
Of course a bit clearer detection would be wishful but we are on the
limit of what is possible with a non-commercial setup, far away from
QSO mode and full call reception. Most odd for HF amateurs, probably
;-) Anyway an amateur generated signal that changed the brightness of a
few pixels in a spectrogram on the right frequency and time :-)<br>
  <br>
VK7ZL to DK7FC is a path of 16784 km,
  <a moz-do-not-send="true" class="moz-txt-link-freetext"
 href="http://no.nonsense.ee/qthmap/?qth=QE37MF&amp;from=jn49ik00wd">http://no.nonsense.ee/qthmap/?qth=QE37MF&amp;from=jn49ik00wd</a>,
unbelivable.
I
hope there are some days left to see further traces
which confirms things. <br>
Now i hope for Markus' detective help ;-)<br>
  <br>
My grabber archive captures from yesterday, 20. March 2012, shows a C
at 17:00 UTC, here discribed as a K in Bob's spectrogram. Actually i
think there seem to be some bright pixels where one expects them if it
would be a C. <a moz-do-not-send="true" class="moz-txt-link-freetext"
 href="http://dl.dropbox.com/u/19882028/LF/EU60_53273.jpg">http://dl.dropbox.com/u/19882028/LF/EU60_53273.jpg</a><br>
  <br>
At ~19:25 UTC (the 7) i was actually transmitting a 7, see
  <a moz-do-not-send="true" class="moz-txt-link-freetext"
 href="http://dl.dropbox.com/u/19882028/LF/EU60_53318.jpg">http://dl.dropbox.com/u/19882028/LF/EU60_53318.jpg</a><br>
  <br>
For me that is convincing and so i would like to congratulate Bob/VK7ZL.<br>
  <br>
Comments welcome.<br>
  <br>
73, Stefan/DK7FC<br>
  <br>
  <br>
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