Re: LF: Big solar flare - major geomagnetic storms to follow

[Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>]

Hello Roelof,

What about NDB signals from the southern hemisphere? How are they 
affected? Do you know (and receive) some from VK? May be a stupid 
question but i have no experience about NDB reception.
73, Stefan/DK7FC

Am 09.03.2012 15:15, schrieb Roelof Bakker:
> Hello Alan,
>
> For further "experimental data", on 518 kHz NAVTEX only stations from 
> the north at a distance below 1000 km were received last night.
> Norlandet at 1374 km away, did not appear at all, where it is a very 
> regular guest otherwise.
> It is interesting to note that a perfect decode was received from 
> Miami, 7000+ km away at 04:05 UTC.
> What is also interesting is that my PERSEUS spectrum window from 0 - 
> 40 MHz showes depressed signals above 2 MHz.
> The average level is 10 - 20 dB below normal.
>
> These SDR's lent themselves very well for wideband propagation study!
>
> 73,
> Roelof, pa0rdt