*AMATEUR RADIO SWL * I 5 5 3 8 7 F I *JN52hx - Riotorto (LI) ITALY

VLF / LF / MF results

*** LowFER Low-Frequency Experimental Radio *** ***

mercoledì 20 dicembre 2017

S.I.D. (Sudden ionospheric disturbance) Monitoring


sudden ionospheric disturbance (SID) is an abnormally high ionization/plasma density in the D region of the ionosphere caused by a solar flare. The SID results in a sudden increase in radio-wave absorption that is most severe in the upper medium frequency (MF) and lower high frequency (HF) ranges, and as a result often interrupts or interferes with telecommunications systems.[1]

from Wikipedia
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Station I55387FI from ITALY -Tuscany 

Station :
Antenna Mini-whip 
SB: Intel SST Audio Device W10
Software :DL4YHF's Spectrum Lab (Audio Signal Analyser)
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Copyright 2000 - 2014  Wolfgang Buescher
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Plotter con stazioni di riferimento che operano in VLF .

Saranno queste che andremo a monitorare per capire i S.I.D. (disturbi improvvisi della ionosfera ) causati dai brillamenti solari,interpretati sul plotter come improvvisi picchi di segnale.


Plotter 10/02/2018 -monitored station DHO38 
DHO38Rhauderfehn, Germany23.4 kHz
SID event 
Start 13:02 
Peak 13:19





















Event compared whit:
www.solarmonitor.org 

Plotter 02/02/2018 

(Nare nel ploter sotto l'arrivo dell'alba.)
19-20 Dicembre 2017