Re: LF: Re: [rsgb_lf_group] MF: DJ0ABR -> JA3TVF in WSPR

["Alan Melia" <alan.melia@btinternet.com>]



That is interesting Markus. I did several years ago discus the possibility of ICM at the time of a CME impact with Vaino OH2LX (an ICM expert)......on the grounds of increased electron density due to precipitation. Vaino did not suggest there was any evidence of correlation. It needs more that one event to be sure and I have never tried the experiment here because I did not seem to have a promising path to monitor. It still looks as though it might be worth looking for.

 

Alan 

----- Original Message -----

From: Markus Vester

To: rsgb_lf_group@blacksheep.org

Sent: Friday, October 14, 2016 10:57 PM

Subject: Re: LF: Re: [rsgb_lf_group] MF: DJ0ABR -> JA3TVF in WSPR

Something strange happened on LF around the same time: Looking at the WSPR spectrogram, I happened to notice a marked noise increase for about eight minutes around 19:15 UT. It is visible as a purple strip on two grabber screenshots: 
http://df6nm.bplaced.net/LF/vlf_lf_icm_2013/test1610131915.jpg
http://df6nm.bplaced.net/LF/vlf_lf_icm_2013/test1610131930.jpg

The noise band was caused by an unusually intense Luxembourg effect, with a pair of strong VLF stations (GQD and DHO) acting as a ionospheric heaters, impressing their difference frequency onto the DCF39 carrier:

138.83 - (23.4 - 22.1) kHz =  137.53 kHz

Best 73,
Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: Roelof Bakker <roelof@ndb.demon.nl>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Fr, 14 Okt 2016 10:27 pm
Betreff: LF: Re: [rsgb_lf_group] MF: DJ0ABR -> JA3TVF in WSPR

Hello Clemens,

There certainly was an opening to Asia last night.
At 19:28 UTC, I logged a NAVTEX station from Malaysia on 518 kHz
over a distance of 10.015 km.

73,
Roelof, pa0rdt