Re: LF: Re: Fwd: DK7FC ?

[Markus Vester <markusvester@aol.com>]

Bob and Stefan,

 

yes, no doubt it's there!

 

http://df6nm.bplaced.net/LF/VK7ZL_DK7FC_pasted_120320.jpg

 

The time ticks on Stefan's and my local captures agree perfectly. On the VK7ZL screenshot, we can find most of "C D" around 17 UT, as well as "7" and part of an "F" around 19:30. Again there seem to be two maxima, roughly coinciding with sunset and sunrise.

 

Very nice work!

 

Best 73,

Markus (DF6NM)

 

-----Ursprüngliche Mitteilung-----
Von: Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mi, 21 Mrz 2012 4:16 pm
Betreff: LF: Re: Fwd: DK7FC ?

 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 official confirmation that these traces are accepted as a valid 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 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 :-)

VK7ZL to DK7FC is a path of 16784 km, http://no.nonsense.ee/qthmap/?qth=QE37MF&from=jn49ik00wd, unbelivable. I hope there are some days left to see further traces which confirms things.
Now i hope for Markus' detective help ;-)

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. http://dl.dropbox.com/u/19882028/LF/EU60_53273.jpg

At ~19:25 UTC (the 7) i was actually transmitting a 7, see 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


Am 20.03.2012 23:38, schrieb David VK2DDI:

Hi Stefan,

Looks like Bob (QE37mf) had success last night.  Nil from here.

Regards,

David. 

-------- Original Message --------

Subject:	DK7FC ?
Date:	Tue, 20 Mar 2012 21:24:24 +0000
From:	Bob <vk7zl@internode.on.net>
To:	David Isele <vk2ddi@internode.on.net>

Hi David

I think I may have copied part of DK7FC

[...]
snipped.
Picture from Bob at http://dl.dropbox.com/u/19882028/LF/VK7ZL_DK7FC.jpg (size to large for the reflector)

Or perhaps it is just wishful thinking.
PS  I notice your grabber clock is incorrect.

Bob

-- 
VK7ZL NDB & Navtex Logging: http://tinyurl.com/255zfm2