Re: LF: Strange signal on MW

[Markus Vester <markusvester@aol.com>]

Confusion... this band is apparently too wide for us ;-))


Clemens mentioned interference on 475.2 - 475.8 kHz.
I pointed out the Hell signal which is really on 476.2 - 476.9 kHz.
 Stefan's reply refered to the four unstable carriers between 474.2 - 474.5 kHz. It is indeed remarkable that what looks like SMPS QRM is being carried that far - the source must be connected to some large "antenna".


Alll the best,
Markus

 



-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 23. Nov 2017 22:09
Betreff: Re: LF: Strange signal on MW

Indeed! :-)
But the chirpy signal between 474.2...474.6 is actually QRM. It is there since years and also visible on the DL3ZID grabber in noth DL, a few 100km distant.

I like the signal from DL6TY :-)

73, Stefan


Am 23.11.2017 21:47, schrieb Markus Vester:

Hi Clemens,

HELL from DL6TY?
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_Grabber.html
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_RDF_Grabber.html

73, Markus

-----Ursprüngliche Mitteilung-----
Von: Clemens Paul <cpaul@gmx.net>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Do, 23. Nov 2017 21:39
Betreff: LF: Strange signal on MW

Hello MWers!

I see and hear a strange noisy broad signal sweeping between about 475,2 and 475.6kHz.
On the waterfall it looks like a jamming signal from a SPSU.
But I can see and hear it also on the remote perseus in Amberg.
So it can't be loacal.
Maybe someone can take a bearing?

73
Clemens
DL4RAJ

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