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

[ALAN MELIA <alan.melia@btinternet.com>]

Thanks Roelof, that is interesting....the Miami copy ties in with the timing of 
the E<>W OPERAcopy Graham sent me. its just before dawn here, and it is 
probably dawn that allows the hot electons into the D-region. The N6RYpath from 
Warren was prob just after sunset at the western end. It is sometimes possible 
to see the signal climbing after a hit at around 6dB per hour.....if you have 
an "imagination" like mine :-))

Alan


--- On Fri, 9/3/12, Roelof Bakker <roelof@ndb.demon.nl> wrote:

> From: Roelof Bakker <roelof@ndb.demon.nl>
> Subject: Re: LF: Big solar flare - major geomagnetic storms to follow
> To: rsgb_lf_group@blacksheep.org
> Date: Friday, 9 March, 2012, 14:15
> 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
> 
>