AW: VLF: 8270.0025

[<markusvester@aol.com>]

Transmitting a short EbNaut message now:

 

Frequency: 8270.0025 Hz

Start time: 13:35:01

Code 8K19A

2 characters

10 seconds/symbol

Total duration: 3680 s

 

Best 73,

Markus (DF6NM)

 

Von: Markus Vester
Gesendet: Donnerstag, 21. Januar 2016 11:05
An: rsgb_lf_group@blacksheep.org
Betreff: Re: VLF: 8270.0025

 

Thanks Stefan, glad to see that! Using EbNaut, 15 dB SNR in 0.63 mHz noise bandwidth should support about 12 characters per hour. But this will probably have to wait until you have finished your local self-test (unless I'd try to sneak into a gap between two CW dots ;-)

 

Useful traces appeared also in Todmorden and Breclav. With currently low QRN levels, Lubos' grabber might perhaps benefit from a little more brightness.

 

The carrier is off since 7:28.

 

Best 73,
Markus (DF6NM)

 

Todmorden: http://abelian.org/vlf/fbins.shtml
Breclav: http://www.ok2bvg.cz/vlf_grabber/index.html
Heidelberg: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html
Nuremberg: http://www.df6nm.darc.de/vlf/vlfgrabber.htm

 

-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 21 Jan 2016 12:39 am
Betreff: Re: VLF: 8270.0025

Hi Markus,

I can see you very well in 424 uHz at up to 15 dB SNR.
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html

73, Stefan

Am 20.01.2016 23:11, schrieb Markus Vester:

Since 21:40 UT I am radiating a GPS-synchroneous carrier on 8270.0025 Hz, hoping for a trace on Stefan's grabber between the DJ8WX and local DK7FC lines. Antenna current is now 0.28 A with a bit of snow on the wire, should be around10 uW ERP. Hope to leave it on for a few hours.

 

73, Markus (DF6NM)