Hello Jürgen,
Welcome to the group!
About 16 kHz: Sometimes there appear traces at 16 kHz as well as on 8
kHz but these may be signals caused by some alias effects in the
soundcard, sampling at 48 or 96 kS/s and/or caused by NAA/24 kHz. I am
receiving these traces too, see the lower capture on
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html and
ignore the 600 Hz spaced QRM lines, caused by the Heidelbergs's tram SMPS...
BTW, it would be interesting to see a 0...24 kHz capture of your RX
antenna, covering one day.
Further interesting VLF grabbers in wider distance:
http://qsl.net/4x1rf/vlf/vlfgrabber.htm
http://simnet.is/halldorgudmunds/
http://kl7uk.com/VLFAlaska.html
73, Stefan/DK7FC
73, Stefan/DK7FC
Am 24.01.2011 20:50, schrieb James Moritz:
Dear Jurgen, LF Group,
You wrote:
- a weak 16,0kHz CW that is slowly being keyed.
According to the above list that should be from UK, but its level is
too low,
unles they use low power...>
The info in the VLF utilities listings tends to be rather old - a lot
of the frequencies listed as being allocated are no longer in regular
use. 15.98kHz was the old frequency of Rugby Radio, GBR, which was
decomissioned several years ago. The replacement VLF stations at
Anthorn and Skelton could probably in theory transmit on that
frequency, but in practice they do not...
Cheers, Jim Moritz
73 de M0BMU
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